2-benzylpyridazinone derivatives as met kinase inhibitors

ABSTRACT

Compounds of the formula I 
     
       
         
         
             
             
         
       
     
     in which R 1 , R 2 , R 3 , R 4′  have the meanings indicated in claim  1,  are inhibitors of tyrosine kinases, in particular Met kinase, and can be employed, inter alia, for the treatment of tumours.

BACKGROUND OF THE INVENTION

The invention had the object of finding novel compounds having valuableproperties, in particular those which can be used for the preparation ofmedicaments.

The present invention relates to compounds and to the use of compoundsin which the inhibition, regulation and/or modulation of signaltransduction by kinases, in particular tyrosine kinases and/orserine/threonine kinases, plays a role, furthermore to pharmaceuticalcompositions which comprise these compounds, and to the use of thecompounds for the treatment of kinase-induced diseases.

In particular, the present invention relates to compounds and to the useof compounds in which the inhibition, regulation and/or modulation ofsignal transduction by Met kinase plays a role.

One of the principal mechanisms by which cellular regulation is effectedis through the transduction of extracellular signals across the membranethat in turn modulate biochemical pathways within the cell. Proteinphosphorylation represents one course by which intracellular signals arepropagated from molecule to molecule resulting finally in a cellularresponse. These signal transduction cascades are highly regulated andoften overlap, as is evident from the existence of many protein kinasesas well as phosphatases. Phosphorylation of proteins occurspredominantly at serine, threonine or tyrosine residues, and proteinkinases have therefore been classified by their specificity ofphosphorylation site, i.e. serine/threonine kinases and tyrosinekinases. Since phosphorylation is such a ubiquitous process within cellsand since cellular phenotypes are largely influenced by the activity ofthese pathways, it is currently believed that a number of disease statesand/or diseases are attributable to either aberrant activation orfunctional mutations in the molecular components of kinase cascades.Consequently, considerable attention has been devoted to thecharacterisation of these proteins and compounds that are able tomodulate their activity (for a review see: Weinstein-Oppenheimer et al.Pharma. &. Therap., 2000, 88, 229-279).

The role of the receptor tyrosine kinase Met in human oncogenesis andthe possibility of inhibition of HGF (hepatocyte growth factor)dependentMet activation are described by S. Berthou et al. in Oncogene, Vol. 23,No. 31, pages 5387-5393 (2004). The inhibitor SU11274 described therein,a pyrrole-indoline compound, is potentially suitable for combatingcancer. Another Met kinase inhibitor for cancer therapy is described byJ. G. Christensen et al. in Cancer Res. 2003, 63(21), 7345-55.

A further tyrosine kinase inhibitor for combating cancer is reported byH. Hov et al. in Clinical Cancer Research Vol. 10, 6686-6694 (2004). Thecompound PHA-665752, an indole derivative, is directed against the HGFreceptor c-Met. It is furthermore reported therein that HGF and Met makea considerable contribution to the malignant process of various forms ofcancer, such as, for example, multiple myeloma.

The synthesis of small compounds which specifically inhibit, regulateand/or modulate signal transduction by tyrosine kinases and/orserine//threonine kinases, in particular Met kinase, is thereforedesirable and an aim of the present invention.

It has been found that the compounds according to the invention andsalts thereof have very valuable pharmacological properties while beingwell tolerated.

The present invention specifically relates to compounds of the formula Iwhich inhibit, regulate and/or modulate signal transduction by Metkinase, to compositions which comprise these compounds, and to processesfor the use thereof for the treatment of Met kinase-induced diseases andcomplaints, such as angiogenesis, cancer, tumour formation, growth andpropagation, arteriosclerosis, ocular diseases, such as age-inducedmacular degeneration, choroidal neovascularisation and diabeticretinopathy, inflammatory diseases, arthritis, thrombosis, fibrosis,glomerulonephritis, neurodegeneration, psoriasis, restenosis, woundhealing, transplant rejection, metabolic diseases and diseases of theimmune system, also autoimmune diseases, cirrhosis, diabetes anddiseases of the blood vessels, also instability and permeability and thelike in mammals.

Solid tumours, in particular fast-growing tumours, can be treated withMet kinase inhibitors. These solid tumours include monocytic leukaemia,brain, urogenital, lymphatic system, stomach, laryngeal and lungcarcinoma, including lung adenocarcinoma and small-cell lung carcinoma.

The present invention is directed to processes for the regulation,modulation or inhibition of Met kinase for the prevention and/ortreatment of diseases in connection with unregulated or disturbed Metkinase activity. In particular, the compounds of the formula I can alsobe employed in the treatment of certain forms of cancer. The compoundsof the formula I can furthermore be used to provide additive orsynergistic effects in certain existing cancer chemotherapies, and/orcan be used to restore the efficacy of certain existing cancerchemotherapies and radiotherapies.

The compounds of the formula I can furthermore be used for the isolationand investigation of the activity or expression of Met kinase. Inaddition, they are particularly suitable for use in diagnostic methodsfor diseases in connection with unregulated or disturbed Met kinaseactivity.

It can be shown that the compounds according to the invention have anantiproliferative action in vivo in a xenotransplant tumour model. Thecompounds according to the invention are administered to a patienthaving a hyperproliferative disease, for example to inhibit tumourgrowth, to reduce inflammation associated with a lymphoproliferativedisease, to inhibit transplant rejection or neurological damage due totissue repair, etc. The present compounds are suitable for prophylacticor therapeutic purposes. As used herein, the term “treatment” is used torefer to both prevention of diseases and treatment of pre-existingconditions. The prevention of proliferation is achieved byadministration of the compounds according to the invention prior to thedevelopment of overt disease, for example to prevent the growth oftumours, prevent metastatic growth, diminish restenosis associated withcardiovascular surgery, etc. Alternatively, the compounds are used forthe treatment of ongoing diseases by stabilising or improving theclinical symptoms of the patient.

The host or patient can belong to any mammalian species, for example aprimate species, particularly humans; rodents, including mice, rats andhamsters; rabbits; horses, cows, dogs, cats, etc. Animal models are ofinterest for experimental investigations, providing a model fortreatment of human disease.

The susceptibility of a particular cell to treatment with the compoundsaccording to the invention can be determined by in vitro tests.Typically, a culture of the cell is combined with a compound accordingto the invention at various concentrations for a period of time which issufficient to allow the active agents to induce cell death or to inhibitmigration, usually between about one hour and one week. In vitro testingcan be carried out using cultivated cells from a biopsy sample. Theviable cells remaining after the treatment are then counted.

The dose varies depending on the specific compound used, the specificdisease, the patient status, etc. A therapeutic dose is typicallysufficient considerably to reduce the undesired cell population in thetarget tissue while the viability of the patient is maintained. Thetreatment is generally continued until a considerable reduction hasoccurred, for example an at least about 50% reduction in the cellburden, and may be continued until essentially no more undesired cellsare detected in the body.

For identification of a signal transduction pathway and for detection ofinteractions between various signal transduction pathways, variousscientists have developed suitable models or model systems, for examplecell culture models (for example Khwaja et al., EMBO, 1997, 16, 2783-93)and models of transgenic animals (for example White et al., Oncogene,2001, 20, 7064-7072). For the determination of certain stages in thesignal transduction cascade, interacting compounds can be utilised inorder to modulate the signal (for example Stephens et al., BiochemicalJ., 2000, 351, 95-105). The compounds according to the invention canalso be used as reagents for, testing kinase-dependent signaltransduction pathways in animals and/or cell culture models or in theclinical diseases mentioned in this application.

Measurement of the kinase activity is a technique which is well known tothe person skilled in the art. Generic test systems for thedetermination of the kinase activity using substrates, for examplehistone (for example Alessi et al., FEBS Lett. 1996, 399, 3, pages333-338) or the basic myelin protein, are described in the literature(for example Campos-Gonzalez, R. and Glenney, Jr, J. R. 1992, J. Biol.Chem. 267, page 14535).

For the identification of kinase inhibitors, various assay systems areavailable. In scintillation proximity assay (Sorg et al., J. ofBiomolecular Screening, 2002, 7, 11-19) and flashplate assay, theradioactive phosphorylation of a protein or peptide as substrate withγATP is measured. In the presence of an inhibitory compound, a decreasedradioactive signal, or none at all, is detectable. Furthermore,homogeneous time-resolved fluorescence resonance energy transfer(HTR-FRET) and fluorescence polarisation (FP) technologies are suitableas assay methods (Sills et al., J. of Biomolecular Screening, 2002,191-214).

Other non-radioactive ELISA assay methods use specificphospho-antibodies (phospho-ABs). The phospho-AB binds only thephosphorylated substrate. This binding can be detected bychemiluminescence using a second peroxidase-conjugated anti-sheepantibody (Ross et al., 2002, Biochem. J.).

There are many diseases associated with deregulation of cellularproliferation and cell death (apoptosis). The conditions of interestinclude, but are not limited to, the following. The compounds accordingto the invention are suitable for the treatment of various conditionswhere there is proliferation and/or migration of smooth muscle cellsand/or inflammatory cells into the intimal layer of a vessel, resultingin restricted blood flow through that vessel, for example in the case ofneointimal occlusive lesions. Occlusive graft vascular diseases ofinterest include atherosclerosis, coronary vascular disease aftergrafting, vein graft stenosis, peri-anastomatic prosthetic restenosis,restenosis after angioplasty or stent placement, and the like.

PRIOR ART

Other pyridazine derivatives are described as MET kinase inhibitors inWO 2007/065518.

Thiadiazinones are described in DE19604388, WO2003/037349 WO2007/057093or WO2007/057092.

Dihydropyridazinones for combating cancer are described in WO 03/037349A1.

Other pyridazines for the treatment of diseases of the immune system,ischaemic and inflammatory diseases are known from EP 1 043 317 A1 andEP 1 061 077 A1.

EP 0 738 716 A2 and EP 0 711 759 B1 describe other dihydropyridazinonesand pyridazinones as fungicides and insecticides.

Other pyridazinones are described as cardiotonic agents in U.S. Pat. No.4,397,854. JP 57-95964 discloses other pyridazinones.

SUMMARY OF THE INVENTION

The invention relates to compounds of the formula I

in which

-   -   R¹ denotes H or A,    -   R² denotes an unsaturated, saturated or aromatic 5- or        6-membered heterocycle having 1 to 4 N, O and/or S atoms, which        may be unsubstituted or mono-, di- or trisubstituted by Hal, A,        [C(R³)₂]_(n)OR³, N═CR³N(R³)₂, SR³, NO₂, CN, COOR³, CON(R³)₂,        NR³COA, NR³SO₂A, SO₂N(R³)₂, S(O)_(m)A, [C(R³)₂]_(n)N(R³)₂,        [C(R³)₂]_(n)Het, O[C(R³)₂]_(n)N(R³)₂]_(n)Het,        S[C(R³)₂]_(n)N(R³)₂, S[C(R³)₂]_(n)Het, NR³[C(R³)₂]_(n)N(R³)₂,        NR³[C(R³)₂]_(n)Het, NHCON(R³)₂, NHCONH[C(R³)₂]_(n)N(R³)₂,        NHCONH[C(R³)₂]_(n)Het, [C(R³)₂]_(n)NHCO[C(R³)₂]_(n)N(R³)₂,        [C(R³)₂]_(n)NHCO[C(R³)₂]_(n)Het, CON(R³)₂,        CONR³[C(R³)₂]_(n)N(R³)₂, CONR³[C(R³)₂]_(n)NR³COOA,        CONR³[C(R³)₂]_(n)OR³, CONR³[C(R³)₂]_(n)Het, COHet, COA and/or ═O        (carbonyl oxygen),    -   R³ denotes H or A,    -   R⁴, R^(4′) each, independently of one another, denote H, Hal, A,        OR³, CN, COOR³, CON(R³)₂, NR³COA, NR³SO₂A, SO₂N(R³)₂ or        S(O)_(m)A,    -   Ar denotes phenyl, naphthyl or biphenyl, each of which is        unsubstituted or mono-, di- or trisubstituted by Hal, A,        [C(R³)₂]_(n)OR³, [C(R³)₂]_(n)N(R³)₂, SR³, NO₂, CN, COOR³,        CON(R³)₂, NR³COA, NR³SO₂A, SO₂N(R³)₂, S(O)_(m)A, CO-Het, Het,        O[C(R³)₂]_(n)N(R³)₂, O[C(R³)₂]_(n)Het, NHCOOA, NHCON(R³)₂,        NHCOO[C(R³)₂]_(n)N(R³)₂, NHCOO[C(R³)₂]_(n)Het,        NHCONH[C(R³)₂]_(n)N(R³)₂, NHCONH[C(R³)₂]_(n)Het,        OCONH[C(R³)₂]_(n)N(R³)₂, OCONH[C(R³)₂]_(n)Het,        CONR³[C(R³)₂]_(n)N(R³)₂, CONR³[C(R³)₂]_(n)Het and/or COA,    -   Het denotes a mono-, bi- or tricyclic saturated, unsaturated or        aromatic heterocycle having 1 to 4 N, O and/or S atoms, which        may be unsubstituted or mono-, di- or trisubstituted by Hal, A,        [C(R³)₂]_(n)OR³, [C(R³)₂]_(n)N(R³)₂, SR³, NO₂, CN, COOR³,        CON(R³)₂, NR³COA, NR³SO₂A, SO₂N(R³)₂, S(O)_(m)A, CO-Het¹,        [C(R³)₂]_(n)Het¹, O[C(R³)₂]_(n)N(R³)₂, O[C(R³)₂]_(n)Het¹,        NHCOOA, NHCON(R³)₂, NHCOO[C(R³)₂]_(n)N(R³)₂,        NHCOO[C(R³)₂]_(n)Het¹, NHCONH[C(R³)₂]_(n)N(R³)₂,        NHCONH[C(R³)₂]_(n)Het¹, OCONH[C(R³)₂]_(n)N(R³)₂,        OCONH[C(R³)₂]_(n)Het¹, CO-Het¹, CHO, COA, ═S, ═NH, ═NA and/or ═O        (carbonyl oxygen),    -   Het¹ denotes a monocyclic saturated heterocycle having 1 to 2 N        and/or O atoms, which may be mono- or disubstituted by A, OA,        OH, Hal and/or ═O (carbonyl oxygen),    -   A denotes unbranched or branched alkyl having 1-10 C atoms, in        which 1-7 H atoms may be replaced by F and/or in which one or        two non-adjacent CH₂ groups may be replaced by O, NH, S, SO, SO₂        and/or by CH═CH groups, or        -   cyclic alkyl having 3-7 C atoms,    -   Hal denotes F, Cl, Br or I,    -   m denotes 0, 1 or 2,    -   n denotes 0, 1, 2, 3 or 4,        and pharmaceutically usable salts, tautomers and stereoisomers        thereof, including mixtures thereof in all ratios.

The compounds of the formula I are also taken to mean pharmaceuticallyusable derivatives and solvates thereof.

The invention also relates to the optically active forms(stereoisomers), the enantiomers, the racemates, the diastereomers andthe hydrates and solvates of these compounds. The term solvates of thecompounds is taken to mean adductions of inert solvent molecules ontothe compounds which form owing to their mutual attractive force solvatesare, for example, mono- or dihydrates or alkoxides.

The term pharmaceutically usable derivatives is taken to mean, forexample, the salts of the compounds according to the invention and alsoso-called prodrug compounds.

The term prodrug derivatives is taken to mean compounds of the formula Iwhich have been modified by means of, for example, alkyl or acyl groups,sugars or oligopeptides and which are rapidly cleaved in the organism toform the effective compounds according to the invention.

These also include biodegradable polymer derivatives of the compoundsaccording to the invention, as described, for example, in Int. J. Pharm.115, 61-67 (1995).

The expression “effective amount” denotes the amount of a medicament orof a pharmaceutical active ingredient which causes in a tissue, system,animal or human a biological or medical response which is sought ordesired, for example, by a researcher or physician.

In addition, the expression “therapeutically effective amount” denotesan amount which, compared with a corresponding subject who has notreceived this amount, has the following consequence: improved treatment,healing, prevention or elimination of a disease, syndrome, condition,complaint, disorder or side-effects or also the reduction in the advanceof a disease, complaint or disorder.

The expression “therapeutically effective amount” also encompasses theamounts which are effective for increasing normal physiologicalfunction.

The invention also relates to the use of mixtures of the compounds ofthe formula I, for example mixtures of two diastereomers, for example inthe ratio 1:1, 1:2, 1:3, 1:4, 1:5, 1:10, 1:100 or 1:1000.

These are particularly preferably mixtures of stereoisomeric compounds.

The invention relates to the compounds of the formula I and saltsthereof and to a process for the preparation of compounds of the formulaI according to claims 1-10 and pharmaceutically usable salts, tautomersand stereoisomers thereof, characterised in that

-   -   a) a compound of the formula II

in which R¹ has the meaning indicated in claim 1,

is reacted with a compound of the formula III

in which R², R³, R⁴ and R^(4′) have the meanings indicated in claim 1and denotes Cl, Br, I or a free or reactively functionally modified OHgroup,or

-   -   b) a radical R² is converted into another radical R² by    -   i) arylating a heterocycle,    -   ii) acylating or alkylating an amino group,    -   iii) etherifying a hydroxyl group,        or    -   c) it is liberated from one of its functional derivatives by        treatment with a solvolysing or hydrogenolysing agent,        and/or

a base or acid of the formula I is converted into one of its salts.

Above and below, the radicals R¹, R², R³, R⁴, R^(4′) have the meaningsindicated for the formula I, unless expressly stated otherwise.

A denotes alkyl, this is unbranched (linear) or branched, and has 1, 2,3, 4, 5, 6, 7, 8, 9 or 10 C atoms. A preferably denotes methyl,furthermore ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl ortert-butyl, furthermore also pentyl, 1-, 2- or 3-methylbutyl, 1,1-, 1,2-or 2,2-dimethyipropyl, 1-ethyl-propyl, hexyl, 1-, 2-, 3- or4-methylpentyl, 1,1-, 1,2-, 1,3-, 2,2-, 2,3- or 3,3-dimethylbutyl, 1- or2-ethylbutyl, 1-ethyl-1-methylpropyl, 1-ethyl-2-methylpropyl, 1,1,2- or1,2,2-trimethylpropyl, furthermore preferably, for example,trifluoromethyl.

A very particularly preferably denotes alkyl having 1, 2, 3, 4, 5 or 6 Catoms, preferably methyl, ethyl, propyl, isopropyl, butyl, isobutyl,sec-butyl, tert-butyl, pentyl, hexyl, trifluoromethyl, pentafluoroethylor 1,1,1-trifluoro-ethyl.

Cyclic alkyl (cycloalkyl) preferably denotes cyclopropyl, cyclobutyl,cyclo-pentyl, cyclohexyl or cycloheptyl.

Ar denotes, for example, o-, m- or p-tolyl, o-, m- or p-ethylphenyl, o-,m- or p-propylphenyl, o-, m- or p-isopropylphenyl, o-, m- orp-tert-butylphenyl, o-, m- or p-hydroxyphenyl, o-, m- or p-nitrophenyl,o-, m- or p-aminophenyl, o-, m- or p-(N-methylamino)phenyl, o-, m- orp-(N-methylaminocarbonyl)-phenyl, o-, m- or p-acetamidophenyl, o-, m- orp-methoxyphenyl, m- or p-ethoxyphenyl, o-, m- or p-ethoxycarbonylphenyl,o-, m- or p-(N,N-dimethylamino)phenyl, o-, m- orp-(N,N-dimethylaminocarbonyl)phenyl, o-, m- or p-(N-ethylamino)phenyl,o-, m- or p-(N,N-diethylamino)phenyl, o-, m- or p-fluorophenyl, o-, m-or p-bromophenyl, o-, m- or p-chlorophenyl, m- orp-(methylsulfonamido)phenyl, o-, m- or p-(methylsulfonyl)phenyl, o-, m-or p-methylsulfanylphenyl, o-, m- or p-cyanophenyl, o-, m- orp-carboxy-phenyl, o-, m- or p-methoxycarbonylphenyl, o-, m- orp-formylphenyl, o-, m- or p-acetylphenyl, o-, m- orp-aminosulfonylphenyl, o-, m- or p-(morpholin-4-ylcarbonyl)phenyl, o-,m- or p-(morpholin-4-ylcarbonyl)phenyl, o-, m- orp-(3-oxomorpholin-4-yl)phenyl, o-, m- or p-(piperidinylcarbonyl)phenyl,o-, m- or p-[2-(morpholin-4-yl)ethoxy]phenyl, o-, m- orp-[3-(N,N-diethyl-amino)propoxy]phenyl, o-, m- orp-[3-(3-diethylaminopropyl)ureido]phenyl, o-, m- orp-(3-diethylaminopropoxycarbonylamino)phenyl, furthermore preferably2,3-, 2,4-, 2,5-, 2,6-, 3,4- or 3,5-difluorophenyl, 2,3-, 2,4-, 2,5-,2,6-, 3,4- or 3,5-dichlorophenyl, 2,3-, 2,4-, 2,5-, 2,6-, 3,4- or3,5-dibromo-phenyl, 2,4- or 2,5-dinitrophenyl, 2,5- or3,4-dimethoxyphenyl, 3-nitro-4-chlorophenyl, 3-amino-4-chloro-,2-amino-3-chloro-, 2-amino-4-chloro-, 2-amino-5-chloro- or2-amino-6-chlorophenyl, 2-nitro-4-N,N-dimethyl-amino- or3-nitro-4-N,N-dimethylaminophenyl, 2,3-diaminophenyl, 2,3,4-, 2,3,5-,2,3,6-, 2,4,6- or 3,4,5-trichlorophenyl, 2,4,6-trimethoxyphenyl,2-hydroxy-3,5-dichlorophenyl, p-iodophenyl, 3,6-dichloro-4-aminophenyl,4-fluoro-3-chlorophenyl, 2-fluoro-4-bromophenyl,2,5-difluoro-4-bromo-phenyl, 3-bromo-6-methoxyphenyl,3-chloro-6-methoxyphenyl, 3-chloro-4-acetamidophenyl,3-fluoro-4-methoxyphenyl, 3-amino-6-methylphenyl,3-chloro-4-acetamidophenyl or 2,5-dimethyl-4-chlorophenyl.

Ar furthermore preferably denotes phenyl, naphthyl or biphenyl, each ofwhich is unsubstituted or mono-, di- or trisubstituted by Hal, CN,O[C(R³)₂]_(n)N(R³)₂, CONR³[C(R³)₂]_(n)N(R³)₂ and/or CONR³_8C(R³)₂]_(n)Het.

Irrespective of further substitutions, Het denotes, for example, 2- or3-furyl, 2- or 3-thienyl, 1-, 2- or 3-pyrrolyl, 1-, 2, 4- or5-imidazolyl, 1-, 3-, 4- or 5-pyrazolyl, 2-, 4- or 5-oxazolyl, 3-, 4- or5-isoxazolyl, 2-, 4- or 5-thiazolyl, 3-, 4- or 5-isothiazolyl, 2-, 3- or4-pyridyl, 2-, 4-, 5- or 6-pyrimidinyl, furthermore preferably1,2,3-triazol-1-, -4- or -5-yl, 1,2,4-triazol-1-, -3- or 5-yl, 1- or5-tetrazolyl, 1,2,3-oxadiazol-4- or -5-yl, 1,2,4-oxadiazol-3- or -5-yl,1,3,4-thiadiazol-2- or -5-yl, 1,2,4-thiadiazol-3- or -5-yl,1,2,3-thiadiazol-4- or -5-yl, 3- or 4-pyridazinyl, pyrazinyl, 1-, 2-,3-, 4-, 5-, 6- or 7-indolyl, 4- or 5-iso-indolyl, indazolyl, 1-, 2-, 4-or 5-benzimidazolyl, 1-, 3-, 4-, 5-, 6- or 7-benzo-pyrazolyl, 2-, 4-,5-, 6- or 7-benzoxazolyl, 3-, 4-, 5-, 6- or 7- benzisoxazolyl, 2-, 4-,5-, 6- or 7-benzothiazolyl, 2-, 4-, 5-, 6- or 7-benzisothiazolyl, 4-,5-, 6- or 7-benz-2,1,3-oxadiazolyl, 2-, 3-, 4-, 5-, 6-, 7- or8-quinolyl, 1-, 3-, 4-, 5-, 6-, 7- or 8-isoquinolyl, 3-, 4-, 5-, 6-, 7-or 8-cinnolinyl, 2-, 4-, 5-, 6-, 7- or 8-quinazolinyl, 5- or6-quinoxalinyl, 2-, 3-, 5-, 6-, 7- or 8-2H-benzo-1,4-oxazinyl, furtherpreferably 1,3-benzodioxol-5-yl, 1,4-benzodioxan-6-yl,2,1,3-benzothiadiazol-4-, -5-yl or 2,1,3-benzoxadiazol-5-yl ordibenzo-furanyl.

The heterocyclic radicals may also be partially or fully hydrogenated.

Irrespective of further substitutions, Het can thus also denote, forexample, 2,3-dihydro-2-, -3-, -4- or -5-furyl, 2,5-dihydro-2-, -3-, -4-or 5-furyl, tetra-hydro-2- or -3-furyl, 1,3-dioxolan-4-yl, tetrahydro-2-or -3-thienyl, 2,3-dihydro-1-, -2-, -3-, -4- or -5-pyrrolyl,2,5-dihydro-1-, -2-, -3-, -4- or -5-pyrrolyl, 1-, 2- or 3-pyrrolidinyl,tetrahydro-1-, -2- or -4-imidazolyl, 2,3-dihydro-1-, -2-, -3-, -4- or-5-pyrazolyl, tetrahydro-1-, -3- or -4-pyrazolyl, 1,4-dihydro-1-, -2-,-3- or -4-pyridyl, 1,2,3,4-tetrahydro-1-, -2-, -3-, -4-, -5- or-6-pyridyl, 1-, 2-, 3- or 4-piperidinyl, 2-, 3- or 4-morpholinyl,tetrahydro-2-, -3- or -4-pyranyl, 1,4-dioxanyl, 1,3-dioxan-2-, -4- or-5-yl, hexahydro-1-, -3- or -4-pyridazinyl, hexahydro-1-, -2-, -4- or-5-pyrimidinyl, 1-, 2- or 3-piperazinyl, 1,2,3,4-tetrahydro-1-, -2-,-3-, -4-, -5-, -6-, -7- or -8-quinolyl, 1,2,3,4-tetra-hydro-1-,-2-,-3-,-4-, -5-, -6-, -7- or -8-isoquinolyl, 2-, 3-, 5-, 6-, 7- or8-3,4-dihydro-2H-benzo-1,4-oxazinyl, furthermore preferably2,3-methylene-dioxyphenyl, 3,4-methylenedioxyphenyl,2,3-ethylenedioxyphenyl, 3,4-ethylenedioxyphenyl,3,4-(difluoromethylenedioxy)phenyl, 2,3-dihydro-benzofuran-5- or 6-yl,2,3-(2-oxomethylenedioxy)phenyl or also3,4-dihydro-2H-1,5-benzodioxepin-6- or -7-yl, furthermore preferably2,3-dihydrobenzofuranyl, 2,3-dihydro-2-oxofuranyl, 3,4-dihydro-2-oxo-1H-quinazolinyl, 2,3-dihydrobenzoxazolyl, 2-oxo-2,3-dihydrobenzoxazolyl,2,3-dihydrobenzimidazolyl, 1,3-dihydroindole, 2-oxo-1,3-dihydroindole or2-oxo-2,3-dihydrobenzimidazolyl.

Het preferably denotes a monocyclic saturated, unsaturated or aromaticheterocycle having 1 to 4 N, O and/or S atoms, which may beunsubstituted or mono-, di- or trisubstituted by A and/or[C(R³)₂]_(n)Het¹.

Het particularly preferably denotes piperidinyl, piperazinyl,pyrrolidinyl, morpholinyl, furyl, thienyl, pyrrolyl, imidazolyl,pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridyl,pyrimidinyl, triazolyl, tetrazolyl, oxadiazolyl, thiadiazolyl,pyridazinyl or pyrazinyl, each of which is monosubstituted by A or[C(R³)₂]_(n)Het¹.

Het¹ preferably denotes a monocyclic saturated heterocycle having 1 to 2N and/or O atoms, which may be mono- or disubstituted by A and/or ═O(carbonyl oxygen).

Het¹ particularly preferably denotes pyrrolidine, piperidine, piperazineor morpholine, each of which is unsubstituted or mono- or disubstitutedby A and/or ═O (carbonyl oxygen).

R¹ preferably denotes cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl,methyl, ethyl, propyl or isopropyl, furthermore also H.

The unsaturated, saturated or aromatic 6-membered heterocycle having 1to 4 N and/or O atoms in the meaning of R² has, for example, thefollowing meanings: furyl, thienyl, pyrrolyl, imidazolyl, pyrazolyl,oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridyl, pyrimidinyl,triazolyl, tetrazolyl, oxadiazolyl or thiadiazolyl.

R² preferably denotes an unsaturated or aromatic 5- or 6-memberedheterocycle having 1 to 4 N and/or O atoms, which may be unsubstitutedor mono-, di- or trisubstituted by Hal, A, [C(R³)₂]_(n)N(R³)₂,[C(R³)₂]_(n)Het, O[C(R³)₂]_(n)N(R³)₂ and/or O[C(R³)₂]_(n)Het. R²particularly preferably denotes furyl, thienyl, pyrrolyl, imidazolyl,pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridyl,pyrimidinyl, triazolyl, tetrazolyl, oxadiazolyl or thiadiazolyl, each ofwhich is monosubstituted by Hal, A, [C(R³)₂]_(n)N(R³)₂, [C(R³)₂]_(n)Het,O[C(R³)₂]_(n)N(R³)₂ O[C(R³)₂]_(n)Het.

R³ preferably denotes H, methyl, ethyl or propyl, very particularlypreferably H.

R⁴, R^(4′) preferably denote H.

Hal preferably denotes F, Cl or Br, but also I, particularly preferablyF or Cl.

Throughout the invention, all radicals which occur more than once may beidentical or different, i.e. are independent of one another.

The compounds of the formula I may have one or more chiral centres andcan therefore occur in various stereoisomeric forms. The formula Iencompasses all these forms.

Accordingly, the invention relates, in particular, to the compounds ofthe formula I in which at least one of the said radicals has one of thepreferred meanings indicated above. Some preferred groups of compoundsmay be expressed by the following sub-formulae Ia to Ik, which conformto the formula I and in which the radicals not designated in greaterdetail have the meaning indicated for the formula I, but in which

-   -   in Ia R² denotes an unsaturated or aromatic 5- or 6-membered        heterocycle having 1 to 4 N and/or O atoms, which may be        unsubstituted or mono-, di- or trisubstituted by Hal, A,        [C(R³)₂]_(n)N(R³)₂, [C(R³)₂]_(n)Het, O[C(R³)₂]_(n)N(R³)₂ and/or        O[C(R³)₂]_(n)Het;    -   in Ib R⁴, R^(4′) denote H;    -   in Ic Het denotes a monocyclic saturated, unsaturated or        aromatic heterocycle having 1 to 4 N, O and/or S atoms, which        may be unsubstituted or mono-, di- or trisubstituted by A and/or        [C(R³)₂]_(n)Het¹;    -   in Id A denotes unbranched or branched alkyl having 1-8 C atoms,        in which 1-7 H atoms may be replaced by F and/or Cl,        -   or        -   cyclic alkyl having 3-7 C atoms;    -   in Ie R³ denotes H, methyl, ethyl or propyl;

in If Het¹ denotes a monocyclic saturated heterocycle having 1 to 2 Nand/or O atoms, which may be mono- or disubstituted by A and/or ═O(carbonyl oxygen);

-   -   in Ig R² denotes furyl, thienyl, pyrrolyl, imidazolyl,        pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl,        pyridyl, pyrimidinyl, triazolyl, tetrazolyl, oxadiazolyl or        thiadiazolyl, each of which is monosubstituted by Hal, A,        [C(R³)₂]_(n)N(R³)₂, [C(R³)₂]_(n)Het, O[C(R³)₂]_(n)N(R³)₂ or        O[C(R³)₂]_(n)Het;    -   in Ih Het denotes piperidinyl, piperazinyl, pyrrolidinyl,        morpholinyl, furyl, thienyl, pyrrolyl, imidazolyl, pyrazolyl,        oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridyl,        pyrimidinyl, triazolyl, tetrazolyl, oxadiazolyl, thiadiazolyl,        pyriclazinyl or pyrazinyl, each of which is monosubstituted by A        or [C(R³)₂]_(n)Het¹;    -   in Ii Het¹ denotes pyrrolidine, piperidine, piperazine or        morpholine, each of which is unsubstituted or mono- or        disubstituted by A and/or ═O (carbonyl oxygen);    -   in Ij R¹ denotes H or A,        -   R² denotes an unsaturated or aromatic 5- or 6-membered            heterocycle having 1 to 4 N and/or O atoms, which may be            unsubstituted or mono-, di- or trisubstituted by Hal, A,            [C(R³)₂]_(n)N(R³)₂, [C(R³)₂]_(n)Het, O[C(R³)₂]_(n)N(R³)₂            and/or O[C(R³)₂]_(n)Het,        -   R³ denotes H, methyl, ethyl or propyl,        -   R⁴, R^(4′) denote H,        -   Het denotes a monocyclic saturated, unsaturated or aromatic            heterocycle having 1 to 4 N, O and/or S atoms, which may be            unsubstituted or mono-, di- or trisubstituted by A and/or            [C(R³)₂]_(n)Het¹,        -   Het¹ denotes a monocyclic saturated heterocycle having 1 to            2 N and/or O atoms, which may be mono- or disubstituted by A            and/or ═O (carbonyl oxygen),        -   A denotes unbranched or branched alkyl having 1-8 C atoms,            in which 1-7 H atoms may be replaced by F and/or Cl,            -   or            -   cyclic alkyl having 3-7 C atoms,        -   Hal denotes F, Cl, Br or I,        -   n denotes 0, 1, 2, 3 or 4;    -   in Ik R¹ denotes H or A,        -   R² denotes furyl, thienyl, pyrrolyl, imidazolyl, pyrazolyl,            oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridyl,            pyrimidinyl, triazolyl, tetrazolyl, oxadiazolyl or            thiadiazolyl, each of which is monosubstituted by Hal, A,            [C(R³)₂]_(n)N(R³)₂, [C(R³)₂]_(n)Het, O[C(R³)₂]_(n)N(R³)₂ or            O[C(R³)₂]_(n)Het,        -   R³ denotes H, methyl, ethyl or propyl,        -   R⁴, R^(4′) denote H,        -   Het denotes piperidinyl, piperazinyl, pyrrolidinyl,            morpholinyl, furyl, thienyl, pyrrolyl, imidazolyl,            pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl,            pyridyl, pyrimidinyl, triazolyl, tetrazolyl, oxadiazolyl,            thiadiazolyl, pyridazinyl or pyrazinyl, each of which is            monosubstituted by A or [C(R³)₂]_(n)Het¹,        -   Het¹ denotes pyrrolidine, piperidine, piperazine or            morpholine, each of which is unsubstituted or mono- or            disubstituted by A and/or ═O (carbonyl oxygen),        -   A denotes unbranched or branched alkyl having 1-8 C atoms,            in which 1-7 H atoms may be replaced by F and/or Cl,            -   or            -   cyclic alkyl having 3-7 C atoms,        -   Hal denotes F, Cl, Br or I,        -   n denotes 0, 1, 2, 3 or 4;            and pharmaceutically usable salts, tautomers and            stereoisomers thereof, including mixtures thereof in all            ratios.

The compounds of the formula I and also the starting materials for theirpreparation are, in addition, prepared by methods known per se, asdescribed in the literature (for example in the standard works, such asHouben-Weyl, Methoden der organischen Chemie [Methods of OrganicChemistry], Georg-Thieme-Verlag, Stuttgart), to be precise underreaction conditions which are known and suitable for the said reactions.Use can also be made here of variants known per se which are notmentioned here in greater detail.

The starting compounds of the formulae II and III are generally known.If they are novel, however, they can be prepared by methods known perse. The pyridazinones of the formula II used are, if not commerciallyavailable, generally prepared by the method of W. J. Coates; A.McKillop, Synthesis, 1993, 334-342.

Compounds of the formula I can preferably be obtained by reacting acompound of the formula II with a compound of the formula III.

In the compounds of the formula III, L preferably denotes Cl, Br, I or afree or reactively modified OH group, such as, for example, an activatedester, an imidazolide or alkylsulfonyloxy having 1-6 C atoms (preferablymethylsulfonyloxy or trifluoromethylsulfonyloxy) or arylsulfonyloxyhaving 6-10 C atoms (preferably phenyl- or p-tolylsulfonyloxy).

The reaction is generally carried out in the presence of an acid-bindingagent, preferably an organic base, such as DIPEA, triethylamine,dimethylaniline, pyridine or quinoline.

The addition of an alkali or alkaline earth metal hydroxide, carbonateor bicarbonate or another salt of a weak acid of the alkali or alkalineearth metals, preferably of potassium, sodium, calcium or caesium, mayalso be favourable.

Depending on the conditions used, the reaction time is between a fewminutes and 14 days, the reaction temperature is between about −30° and140°, normally between −10° and 90°, in particular between about 0° andabout 70°.

Examples of suitable inert solvents are hydrocarbons, such as hexane,petroleum ether, benzene, toluene or xylene; chlorinated hydrocarbons,such as trichloroethylene, 1,2-dichloroethane, carbon tetrachloride,chloroform or dichloromethane; alcohols, such as methanol, ethanol,isopropanal, n-propanol, n-butanol or tert-butanol; ethers, such asdiethyl ether, diisopropyl ether, tetrahydrofuran (THF) or dioxane;glycol ethers, such as ethylene glycol monomethyl or monoethyl ether,ethylene glycol dimethyl ether (diglyme); ketones, such as acetone orbutanone; amides, such as acetamide, dimethylacetamide ordimethylformamide (DMF); nitriles, such as acetonitrile; sulfoxides,such as dimethyl sulfoxide (DMSO); carbon disulfide; carboxylic acids,such as formic acid or acetic acid; nitro compounds, such asnitromethane or nitrobenzene; esters, such as ethyl acetate, or mixturesof the said solvents.

Particular preference is given to acetonitrile, dichloromethane and/orDMF.

The reaction of a compound of the formula II with a compound of theformula III in which L denotes OH, is preferably carried out in aMitsunobu reaction by addition of, for example, triphenylphosphine and adialkyl azodicarboxylate. THF is preferred as solvent.

The compounds of the formula I can furthermore be obtained by convertinga radical R² into another radical R² by, for example, arylating aheterocycle in a Suzuki reaction.

The compounds of the formula I can furthermore be obtained by liberatingthem from their functional derivatives by solvolysis, in particularhydrolysis, or by hydrogenolysis.

Preferred starting materials for the solvolysis or hydrogenolysis arethose which contain corresponding protected amino and/or hydroxyl groupsinstead of one or more free amino and/or hydroxyl groups, preferablythose which carry an amino-protecting group instead of an H atom bondedto an N atom, for example those which conform to the formula I, butcontain an NHR′ group (in which R′ is an amino-protecting group, forexample BOC or CBZ) instead of an NH₂ group,

Preference is furthermore given to starting materials which carry ahydroxyl-protecting group instead of the H atom of a hydroxyl group, forexample those which conform to the formula I, but contain an R″O-phenylgroup (in which R″ is a hydroxyl-protecting group) instead of ahydroxy-phenyl group.

It is also possible for a plurality of—identical or different—protectedamino and/or hydroxyl groups to be present in the molecule of thestarting material. If the protecting groups present are different fromone another, they can in many cases be cleaved off selectively.

The term “amino-protecting group” is known in general terms and relatesto groups which are suitable for protecting (blocking) an amino groupagainst chemical reactions, but are easy to remove after the desiredchemical reaction has been carried out elsewhere in the molecule.Typical of such groups are, in particular, unsubstituted or substitutedacyl, aryl, aralkoxymethyl or aralkyl groups. Since the amino-protectinggroups are removed after the desired reaction (or reaction sequence),their type and size are furthermore not crucial; however, preference isgiven to those having 1-20, in particular 1-8, carbon atoms. The term“acyl group” is to be understood in the broadest sense in connectionwith the present process. It includes acyl groups derived fromaliphatic, araliphatic, aromatic or heterocyclic carboxylic acids orsulfonic acids, and, in particular, alkoxycarbonyl, aryloxycarbonyl andespecially aralkoxycarbonyl groups. Examples of such acyl groups arealkanoyl, such as acetyl, propionyl and butyryl; aralkanoyl, such asphenylacetyl; aroyl, such as benzoyl and tolyl; aryloxyalkanoyl, such asPOA; alkoxycarbonyl, such as methoxycarbonyl, ethoxycarbonyl,2,2,2-trichioroethoxycarbonyl, BOC and 2-iodoethoxycarbonyl;aralkoxycarbonyl, such as CBZ (“carbobenzoxy”),4-methoxybenzyloxycarbonyl and FMOC; and arylsulfonyl, such as Mtr, Pbfand Pmc. Preferred amino-protecting groups are BOC and Mtr, furthermoreCBZ, Fmoc, benzyl and acetyl.

The term “hydroxyl-protecting group” is likewise known in general termsand relates to groups which are suitable for protecting a hydroxyl groupagainst chemical reactions, but are easy to remove after the desiredchemical reaction has been carried out elsewhere in the molecule.Typical of such groups are the above-mentioned unsubstituted orsubstituted aryl, aralkyl or acyl groups, furthermore also alkyl groups.The nature and size of the hydroxyl-protecting groups are not crucialsince they are removed again after the desired chemical reaction orreaction sequence; preference is given, to groups having 1-20, inparticular 1-10, carbon atoms. Examples of hydroxyl-protecting groupsare, inter alia, tert-butoxycarbonyl, benzyl, p-nitrobenzoyl,p-toluenesulfonyl, tert-butyl and acetyl, where benzyl and tert-butylare particularly preferred. The COOH groups in aspartic acid andglutamic acid are preferably protected in the form of their tert-butylesters (for example Asp(OBut)).

The compounds of the formula I are liberated from their functionalderivatives—depending on the protecting group used—for example usingstrong acids, advantageously using TFA or perchloric acid, but alsousing other strong inorganic acids, such as hydrochloric acid orsulfuric acid, strong organic carboxylic acids, such as trichloroaceticacid, or sulfonic acids, such as benzene- or p-toluenesulforiic acid.The presence of an additional inert solvent is possible, but is notalways necessary. Suitable inert solvents are preferably organic, forexample carboxylic acids, such as acetic acid, ethers, such astetrahydrofuran or dioxane, amides, such as DMF, halogenatedhydrocarbons, such as dichloromethane, furthermore also alcohols, suchas methanol, ethanol or isopropanol, and water. Mixtures of theabove-mentioned solvents are furthermore suitable. TFA is preferablyused in excess without addition of a further solvent, and perchloricacid is preferably used in the form of a mixture of acetic acid and 70%perchloric acid in the ratio 9:1. The reaction temperatures for thecleavage are advantageously between about 0 and about 50°, preferablybetween 15 and 30° (room temperature).

The BOC, OBut, Pbf, Pmc and Mtr groups can, for example, preferably becleaved off using TFA in dichloromethane or using approximately 3 to 5NHCl in dioxane at 15-30°, and the FMOC group can be cleaved off using anapproximately 5 to 50% solution of dimethylamine, diethylamine orpiperidine in DMF at 15-30°.

The trityl group is employed to protect the amino acids histidine,asparagine, glutamine and cysteine. They are cleaved off, depending onthe desired end product, using TFA/10% thiophenol, with the trityl groupbeing cleaved off from all the said amino acids; on use of TFA/anisoleor TFA/thioanisole, only the trityl group of His, Asn and Gln is cleavedoff, whereas it remains on the Cys side chain.

The Pbf (pentamethylbenzofuranyl) group is employed to protect Arg. Itis cleaved off using, for example, TFA in dichloromethane.

Hydrogenolytically removable protecting groups (for example CBZ orbenzyl) can be cleaved off, for example, by treatment with hydrogen inthe presence of a catalyst (for example a noble-metal catalyst, such aspalladium, advantageously on a support, such as carbon). Suitablesolvents here are those indicated above, in particular, for example,alcohols, such as methanol or ethanol, or amides, such as DMF. Thehydrogenolysis is generally carried out at temperatures between about 0and 100° and pressures between about 1 and 200 bar, preferably at 20-30°and 1-10 bar. Hydrogenolysis of the CBZ group succeeds well, forexample, on 5 to 10% Pd/C in methanol or using ammonium formate (insteadof hydrogen) on Pd/C in methanol/DMF at 20-30°.

Pharmaceutical Salts and Other Forms

The said compounds according to the invention can be used in their finalnon-salt form. On the other hand, the present invention also encompassesthe use of these compounds in the form of their pharmaceuticallyacceptable salts, which can be derived from various organic andinorganic acids and bases by procedures known in the art.Pharmaceutically acceptable salt forms of the compounds of the formula Iare for the most part prepared by conventional methods. If the compoundof the formula I contains a carboxyl group, one of its suitable saltscan be formed by reacting the compound with a suitable base to give thecorresponding base-addition salt. Such bases are, for example, alkalimetal hydroxides, including potassium hydroxide, sodium hydroxide andlithium hydroxide; alkaline earth metal hydroxides, such as bariumhydroxide and calcium hydroxide; alkali metal alkoxides, for examplepotassium ethoxide and sodium propoxide; and various organic bases, suchas piperidine, diethanolamine and N-methyl-glutamine. The aluminiumsalts of the compounds of the formula I are likewise included. In thecase of certain compounds of the formula I, acid-addition salts can beformed by treating these compounds with pharmaceutically acceptableorganic and inorganic acids, for example hydrogen halides, such ashydrogen chloride, hydrogen bromide or hydrogen iodide, other mineralacids and corresponding salts thereof, such as sulfate, nitrate orphosphate and the like, and alkyl- and monoarylsulfonates, such asethanesulfonate, toluenesulfonate and benzenesulfonate, and otherorganic acids and corresponding salts thereof, such as acetate,trifluoro-acetate, tartrate, maleate, succinate, citrate, benzoate,salicylate, ascorbate and the like. Accordingly, pharmaceuticallyacceptable acid-addition salts of the compounds of the formula I includethe following: acetate, adipate, alginate, arginate, aspartate,benzoate, benzenesulfonate (besylate), bisulfate, bisulfite, bromide,butyrate, camphorate, camphorsulfonate, caprylate, chloride,chlorobenzoate, citrate, cyclopentanepropionate, digluconate,dihydrogenphosphate, dinitrobenzoate, dodecylsulfate, ethane-sulfonate,fumarate, galacterate (from mucic acid), galacturonate,gluco-heptanoate, gluconate, glutamate, glycerophosphate, hemisuccinate,hemisulfate, heptanoate, hexanoate, hippurate, hydrochloride,hydrobromide, hydroiodide, 2-hydroxyethanesulfonate, iodide,isethionate, isobutyrate, lactate, lactobionate, malate, maleate,malonate, mandelate, metaphosphate, methanesulfonate, methylbenzoate,monohydrogenphosphate, 2-naphthalenesulfonate, nicotinate, nitrate,oxalate, oleate, palmate, pectinate, persulfate, phenylacetate,3-phenylpropionate, phosphate, phosphonate, phthalate, but this does notrepresent a restriction.

Furthermore, the base salts of the compounds according to the inventioninclude aluminium, ammonium, calcium, copper, iron(III), iron(II),lithium, magnesium, manganese(III), manganese(II), potassium, sodium andzinc salts, but this is not intended to represent a restriction. Of theabove-mentioned salts, preference is given to ammonium; the alkali metalsalts sodium and potassium, and the alkaline earth metal salts calciumand magnesium. Salts of the compounds of the formula I which are derivedfrom pharmaceutically acceptable organic non-toxic bases include saltsof primary, secondary and tertiary amines, substituted amines, alsoincluding naturally occurring substituted amines, cyclic amines, andbasic ion exchanger resins, for example arginine, betaine, caffeine,chioroprocaine, choline, N,N′-dibenzylethylenediamine (benzathine),dicyclohexylamine, diethanolamine, diethylamine, 2-diethylaminoethanol,2-dimethylaminoethanol, ethanolamine, ethylenediamine,N-ethylmorpholine, N-ethyl-piperidine, glucamine, glucosamine,histidine, hydrabamine, isopropyl-amine, lidocaine, lysine, meglumine,N-methyl-D-glucamine, morpholine, piperazine, piperidine, polyamineresins, procaine, purines, theobromine, triethanolamine, triethylamine,trimethylamine, tripropylamine and tris-(hydroxymethyl)methylamine(tromethamine), but this is not intended to represent a restriction.

Compounds of the present invention which contain basicnitrogen-containing groups can be quaternised using agents such as(C₁-C₄)alkyl halides, for example methyl, ethyl, isopropyl andtert-butyl chloride, bromide and iodide; di(C₁-C₄)alkyl sulfates, forexample dimethyl, diethyl and diamyl sulfate; (C₁₀-C₁₈)alkyl halides,for example decyl, dodecyl, lauryl, myristyl and stearyl chloride,bromide and iodide; and aryl(C₁-C₄)alkyl halides, for example benzylchloride and phenethyl bromide. Both water- and oil-soluble compoundsaccording to the invention can be prepared using such salts.

The above-mentioned pharmaceutical salts which are preferred includeacetate, trifluoroacetate, besylate, citrate, fumarate, gluconate,hemisuccinate, hippurate, hydrochloride, hydrobromide, isethionate,mandelate, meglumine, nitrate, oleate, phosphonate, pivalate, sodiumphosphate, stearate, sulfate, sulfosalicylate, tartrate, thiomalate,tosylate and tromethamine, but this is not intended to represent arestriction.

Particular preference is given to hydrochloride, dihydrochloride,hydrobromide, maleate, mesylate, phosphate, sulfate and succinate.

The acid-addition salts of basic compounds of the formula I are preparedby bringing the free base form into contact with a sufficient amount ofthe desired acid, causing the formation of the salt in a conventionalmanner. The free base can be regenerated by bringing the salt form intocontact with a base and isolating the free base in a conventionalmanner. The free base forms differ in a certain respect from thecorresponding salt forms thereof with respect to certain physicalproperties, such as solubility in polar solvents; for the purposes ofthe invention, however, the salts otherwise correspond to the respectivefree base forms thereof.

As mentioned, the pharmaceutically acceptable base-addition salts of thecompounds of the formula I are formed with metals or amines, such asalkali metals and alkaline earth metals or organic amines. Preferredmetals are sodium, potassium, magnesium and calcium. Preferred organicamines are N,N′-dibenzylethylenediamine, chloroprocaine, choline,diethanolamine, ethylenediamine, N-methyl-D-glucamine and procaine.

The base-addition salts of acidic compounds according to the inventionare prepared by bringing the free acid form into contact with asufficient amount of the desired base, causing the formation of the saltin a conventional manner. The free acid can be regenerated by bringingthe salt form into contact with an acid and isolating the free acid in aconventional manner. The free acid forms differ in a certain respectfrom the corresponding salt forms thereof with respect to certainphysical properties, such as solubility in polar solvents; for thepurposes of the invention, however, the salts otherwise correspond tothe respective free acid forms thereof.

If a compound according to the invention contains more than one groupwhich is capable of forming pharmaceutically acceptable salts of thistype, the invention also encompasses multiple salts. Typical multiplesalt forms include, for example, bitartrate, diacetate, difumarate,dimeglumine, diphosphate, disodium and trihydrochioride, but this is notintended to represent a restriction.

With regard to that stated above, it can be seen that the expression“pharmaceutically acceptable salt” in the present connection is taken tomean an active ingredient which comprises a compound of the formula I inthe form of one of its salts, in particular if this salt form impartsimproved pharmacokinetic properties on the active ingredient comparedwith the free form of the active ingredient or any other salt form ofthe active ingredient used earlier. The pharmaceutically acceptable saltform of the active ingredient can also provide this active ingredientfor the first time with a desired pharmacokinetic property which it didnot have earlier and can even have a positive influence on thepharmacodynamics of this active ingredient with respect to itstherapeutic efficacy in the body.

The invention furthermore relates to medicaments comprising at least onecompound of the formula I and/or pharmaceutically usable derivatives,solvates and stereoisomers thereof, including mixtures thereof in allratios, and optionally excipients and/or adjuvants.

Pharmaceutical formulations can be administered in the form of dosageunits which comprise a predetermined amount of active ingredient perdosage unit. Such a unit can comprise, for example, 0.5 mg to 1 g,preferably 1 mg to 700 mg, particularly preferably 5 mg to 100 mg, of acompound according to the invention, depending on the condition treated,the method of administration and the age, weight and condition of thepatient, or pharmaceutical formulations can be administered in the formof dosage units which comprise a predetermined amount of activeingredient per dosage unit. Preferred dosage unit formulations are thosewhich comprise a daily dose or part-dose, as indicated above, or acorresponding fraction thereof of an active ingredient. Furthermore,pharmaceutical formulations of this type can be prepared using a processwhich is generally known in the pharmaceutical art.

Pharmaceutical formulations can be adapted for administration via anydesired suitable method, for example by oral (including buccal orsublingual), rectal, nasal, topical (including buccal, sublingual ortransdermal), vaginal or parenteral (including subcutaneous,intramuscular, intravenous or intradermal) methods. Such formulationscan be prepared using all processes known in the pharmaceutical art by,for example, combining the active ingredient with the excipient(s) oradjuvant(s).

Pharmaceutical formulations adapted for oral administration can beadministered as separate units, such as, for example, capsules ortablets; powders or granules; solutions or suspensions in aqueous ornon-aqueous liquids; edible foams or foam foods; or oil-in-water liquidemulsions or water-in-oil liquid emulsions.

Thus, for example, in the case of oral administration in the form of atablet or capsule, the active-ingredient component can be combined withan oral, non-toxic and pharmaceutically acceptable inert excipient, suchas, for example, ethanol, glycerol, water and the like. Powders areprepared by comminuting the compound to a suitable fine size and mixingit with a pharmaceutical excipient comminuted in a similar manner, suchas, for example, an edible carbohydrate, such as, for example, starch ormannitol. A flavour, preservative, dispersant and dye may likewise bepresent.

Capsules are produced by preparing a powder mixture as described aboveand filling shaped gelatine shells therewith. Glidants and lubricants,such as, for example, highly disperse silicic acid, talc, magnesiumstearate, calcium stearate or polyethylene glycol in solid form, can beadded to the powder mixture before the filling operation. A disintegrantor solubiliser, such as, for example, agar-agar, calcium carbonate orsodium carbonate, may likewise be added in order to improve theavailability of the medicament after the capsule has been taken.

In addition, if desired or necessary, suitable binders, lubricants anddisintegrants as well as dyes can likewise be incorporated into themixture. Suitable binders include starch, gelatine, natural sugars, suchas, for example, glucose or beta-lactose, sweeteners made from maize,natural and synthetic rubber, such as, for example, acacia, tragacanthor sodium alginate, carboxymethylcellulose, polyethylene glycol, waxes,and the like. The lubricants used in these dosage forms include sodiumoleate, sodium stearate, magnesium stearate, sodium benzoate, sodiumacetate, sodium chloride and the like. The disintegrants include,without being restricted thereto, starch, methylcellulose, agar,bentonite, xanthan gum and the like. The tablets are formulated by, forexample, preparing a powder mixture, granulating or dry-pressing themixture, adding a lubricant and a disintegrant and pressing the entiremixture to give tablets. A powder mixture is prepared by mixing thecompound comminuted in a suitable manner with a diluent or a base, asdescribed above, and optionally with a binder, such as, for example,carboxymethylcellulose, an alginate, gelatine or polyvinyl-pyrrolidone,a dissolution retardant, such as, for example, paraffin, an absorptionaccelerator, such as, for example, a quaternary salt, and/or anabsorbant, such as, for example, bentonite, kaolin or dicalciumphosphate. The powder mixture can be granulated by wetting it with abinder, such as, for example, syrup, starch paste, acadia mucilage orsolutions of cellulose or polymer materials and pressing it through asieve. As an alternative to granulation, the powder mixture can be runthrough a tabletting machine, giving lumps of non-uniform shape, whichare broken up to form granules. The granules can be lubricated byaddition of stearic acid, a stearate salt, talc or mineral oil in orderto prevent sticking to the tablet casting moulds. The lubricated mixtureis then pressed to give tablets. The compounds according to theinvention can also be combined with a free-flowing inert excipient andthen pressed directly to give tablets without carrying out thegranulation or dry-pressing steps. A transparent or opaque protectivelayer consisting of a shellac sealing layer, a layer of sugar or polymermaterial and a gloss layer of wax may be present. Dyes can be added tothese coatings in order to be able to differentiate between differentdosage units.

Oral liquids, such as, for example, solution, syrups and elixirs, can beprepared in the form of dosage units so that a given quantity comprisesa pre-specified amount of the compound. Syrups can be prepared bydissolving the compound in an aqueous solution with a suitable flavour,while elixirs are prepared using a non-toxic alcoholic vehicle.Suspensions can be formulated by dispersion of the compound in anon-toxic vehicle. Solubilisers and emulsifiers, such as, for example,ethoxylated isostearyl alcohols and polyoxyethylene sorbitol ethers,preservatives, flavour additives, such as, for example, peppermint oilor natural sweeteners or saccharin, or other artificial sweeteners andthe like, can likewise be added.

The dosage unit formulations for oral administration can, if desired, beencapsulated in microcapsules. The formulation can also be prepared insuch a way that the release is extended or retarded, such as, forexample, by coating or embedding of particulate material in polymers,wax and the like.

The compounds of the formula I and salts, solvates and physiologicallyfunctional derivatives thereof can also be administered in the form ofliposome delivery systems, such as, for example, small unilamellarvesicles, large unilamellar vesicles and multilamellar vesicles.Liposomes can be formed from various phospholipids, such as, forexample, cholesterol, stearylamine or phosphatidylcholines.

The compounds of the formula I and the salts, solvates andphysiologically functional derivatives thereof can also be deliveredusing monoclonal antibodies as individual carriers to which the compoundmolecules are coupled. The compounds can also be coupled to solublepolymers as targeted medicament carriers. Such polymers may encompasspolyvinylpyrrolidone, pyran copolymer,polyhydroxypropylmethacrylamidophenol, polyhydroxyethylaspartamidophenolor polyethylene oxide polylysine, substituted by palmitoyl radicals. Thecompounds may furthermore be coupled to a class of biodegradablepolymers which are suitable for achieving controlled release of amedicament, for example polylactic acid, poly-epsiloncaprolactone,polyhydroxybutyric acid, polyorthoesters, polyacetals,polydihydroxypyrans, polycyanoacrylates and crosslinked or amphipathicblock copolymers of hydrogels.

Pharmaceutical formulations adapted for transdermal administration canbe administered as independent plasters for extended, close contact withthe epidermis of the recipient. Thus, for example, the active ingredientcan be delivered from the plaster by iontophoresis, as described ingeneral terms in Pharmaceutical Research, 3(6), 318 (1986).

Pharmaceutical compounds adapted for topical administration can beformulated as ointments, creams, suspensions, lotions, powders,solutions, pastes, gels, sprays, aerosols or oils.

For the treatment of the eye or other external tissue, for example mouthand skin, the formulations are preferably applied as topical ointment orcream. In the case of formulation to give an ointment, the activeingredient can be employed either with a paraffinic or a water-misciblecream base. Alternatively, the active ingredient can be formulated togive a cream with an oil-in-water cream base or a water-in-oil base.

Pharmaceutical formulations adapted for topical application to the eyeinclude eye drops, in which the active ingredient is dissolved orsuspended in a suitable carrier, in particular an aqueous solvent.

Pharmaceutical formulations adapted for topical application in the mouthencompass lozenges, pastilles and mouthwashes.

Pharmaceutical formulations adapted for rectal administration can beadministered in the form of suppositories or enemas.

Pharmaceutical formulations adapted for nasal administration in whichthe carrier substance is a solid comprise a coarse powder having aparticle size, for example, in the range 20-500 microns, which isadministered in the manner in which snuff is taken, i.e. by rapidinhalation via the nasal passages from a container containing the powderheld close to the nose. Suitable formulations for administration asnasal spray or nose drops with a liquid as carrier substance encompassactive-ingredient solutions in water or oil.

Pharmaceutical formulations adapted for administration by inhalationencompass finely particulate dusts or mists, which can be generated byvarious types of pressurised dispensers with aerosols, nebulisers orinsufflators.

Pharmaceutical formulations adapted for vaginal administration can beadministered as pessaries, tampons, creams, gels, pastes, foams or sprayformulations.

Pharmaceutical formulations adapted for parenteral administrationinclude aqueous and non-aqueous sterile injection solutions comprisingantioxidants, buffers, bacteriostatics and solutes, by means of whichthe formulation is rendered isotonic with the blood of the recipient tobe treated; and aqueous and non-aqueous sterile suspensions, which maycomprise suspension media and thickeners. The formulations can beadministered in single-dose or multidose containers, for example sealedampoules and vials, and stored in freeze-dried (lyophilised) state, sothat only the addition of the sterile carrier liquid, for example waterfor injection purposes, immediately before use is necessary. Injectionsolutions and suspensions prepared in accordance with the recipe can beprepared from sterile powders, granules and tablets.

It goes without saying that, in addition to the above particularlymentioned constituents, the formulations may also comprise other agentsusual in the art with respect to the particular type of formulation;thus, for example, formulations which are suitable for oraladministration may comprise flavours

A therapeutically effective amount of a compound of the formula Idepends on a number of factors, including, for example, the age andweight of the animal, the precise condition that requires treatment, andits severity, the nature of the formulation and the method ofadministration, and is ultimately determined by the treating doctor orvet. However, an effective amount of a compound according to theinvention for the treatment of neoplastic growth, for example colon orbreast carcinoma, is generally in the range from 0.1 to 100 mg/kg ofbody weight of the recipient (mammal) per day and particularly typicallyin the range from 1 to 10 mg/kg of body weight per day. Thus, the actualamount per day for an adult mammal weighing 70 kg is usually between 70and 700 mg, where this amount can be administered as a single dose perday or usually in a series of part-doses (such as, for example, two,three, four, five or six) per day, so that the total daily dose is thesame. An effective amount of a salt or solvate or of a physiologicallyfunctional derivative thereof can be determined as the fraction of theeffective amount of the compound according to the invention per se. Itcan be assumed that similar doses are suitable for the treatment ofother conditions mentioned above.

The invention furthermore relates to medicaments comprising at least onecompound of the formula I and/or pharmaceutically usable salts andstereoisomers thereof, including mixtures thereof in all ratios, and atleast one further medicament active ingredient.

The invention also relates to a set (kit) consisting of separate packsof

-   -   (a) an effective amount of a compound of the formula I and/or        pharmaceutically usable salts and stereoisomers thereof,        including mixtures thereof in all ratios, and    -   (b) an effective amount of a further medicament active        ingredient.

The set comprises suitable containers, such as boxes, individualbottles, bags or ampoules. The set may, for example, comprise separateampoules, each containing an effective amount of a compound of theformula I and/or pharmaceutically usable derivatives, solvates andstereoisomers thereof, including mixtures thereof in all ratios,

and an effective amount of a further medicament active ingredient indissolved or lyophilised form.

Use

The present compounds are suitable as pharmaceutical active ingredientsfor mammals, especially for humans, in the treatment of tyrosinekinase-induced diseases. These diseases include the proliferation oftumour cells, pathological neovascularisation (or angiogenesis) whichpromotes the growth of solid tumours, ocular neovascularisation(diabetic retinopathy, age-induced macular degeneration and the like)and inflammation (psoriasis, rheumatoid arthritis and the like).

The present invention encompasses the use of the compounds of theformula I and/or physiologically acceptable salts and solvates thereoffor the preparation of a medicament for the treatment or prevention ofcancer. Preferred carcinomas for the treatment originate from the groupcerebral carcinoma, urogenital tract carcinoma, carcinoma of thelymphatic system, stomach carcinoma, laryngeal carcinoma and lungcarcinoma. A further group of preferred forms of cancer are monocyticleukaemia, lung adeno-carcinoma, small-cell lung carcinomas, pancreaticcancer, glioblastornas and breast carcinoma.

Also encompassed is the use of the compounds according to claim 1according to the invention and/or physiologically acceptable salts andsolvates thereof for the preparation of a medicament for the treatmentor prevention of a disease in which angiogenesis is implicated.

Such a disease in which angiogenesis is implicated is an ocular disease,such as retinal vascularisation, diabetic retinopathy, age-inducedmacular degeneration and the like.

The use of compounds of the formula I and/or physiologically acceptablesalts and solvates thereof for the preparation of a medicament for thetreatment or prevention of inflammatory diseases also falls within thescope of the present invention. Examples of such inflammatory diseasesinclude rheumatoid arthritis, psoriasis, contact dermatitis, delayedhyper-sensitivity reaction and the like.

Also encompassed is the use of the compounds of the formula I and/orphysiologically acceptable salts and solvates thereof for thepreparation of a medicament for the treatment or prevention of atyrosine kinase-induced disease or a tyrosine kinase-induced conditionin a mammal, in which to this method a therapeutically effective amountof a compound according to the invention is administered to a sickmammal in need of such treatment. The therapeutic amount variesaccording to the specific disease and can be determined by the personskilled in the art without undue effort.

The present invention also encompasses the use compounds of the formulaI and/or physiologically acceptable salts and solvates thereof for thepreparation of a medicament for the treatment or prevention of retinalvascularisation.

Methods for the treatment or prevention of ocular diseases, such asdiabetic retinopathy and age-induced macular degeneration, are likewisepart of the invention. The use for the treatment or prevention ofinflammatory diseases, such as rheumatoid arthritis, psoriasis, contactdermatitis and delayed hypersensitivity reaction, as well as thetreatment or prevention of bone pathologies from the group osteosarcoma,osteoarthritis and rickets, likewise falls within the scope of thepresent invention.

The expression “tyrosine kinase-induced diseases or conditions” refersto pathological conditions that depend on the activity of one or moretyrosine kinases. Tyrosine kinases either directly or indirectlyparticipate in the signal transduction pathways of a variety of cellularactivities, including proliferation, adhesion and migration anddifferentiation. Diseases associated with tyrosine kinase activityinclude proliferation of tumour cells, pathological neovascularisationthat promotes the growth of solid tumours, ocular neovascularisation(diabetic retinopathy, age-induced macular degeneration and the like)and inflammation (psoriasis, rheumatoid arthritis and the like).

The compounds of the formula I can be administered to patients for thetreatment of cancer, in particular fast-growing tumours.

The invention thus relates to the use of compounds of the formula I, andpharmaceutically usable salts and stereoisomers thereof, includingmixtures thereof in all ratios, for the preparation of a medicament forthe treatment of diseases in which the inhibition, regulation and/ormodulation of kinase signal transduction plays a role.

Preference is given here to Met kinase.

Preference is given to the use of compounds of the formula I, andpharmaceutically usable salts and stereoisomers thereof, includingmixtures thereof in all ratios,

for the preparation of a medicament for the treatment of diseases whichare influenced by inhibition of tyrosine kinases by the compoundsaccording to claim 1.

Particular preference is given to the use for the preparation of amedicament for the treatment of diseases which are influenced byinhibition of Met kinase by the compounds according to claim 1.

Especial preference is given to the use for the treatment of a diseasewhere the disease is a solid tumour.

The solid tumour is preferably selected from the group of tumours of thelung, squamous epithelium, the bladder, the stomach, the kidneys, ofhead and neck, the oesophagus, the cervix, the thyroid, the intestine,the liver, the brain, the prostate, the urogenital tract, the lymphaticsystem, the stomach and/or the larynx.

The solid tumour is furthermore preferably selected from the group lungadenocarcinoma, small-cell lung carcinomas, pancreatic cancer,glioblastomas, colon carcinoma and breast carcinoma.

Preference is furthermore given to the use for the treatment of a tumourof the blood and immune system, preferably for the treatment of a tumourselected from the group of acute myeloid leukaemia, chronic myeloidleukaemia, acute lymphatic leukaemia and/or chronic lymphatic leukaemia.

The disclosed compounds of the formula I can be administered incombination with other known therapeutic agents, including anticanceragents. As used here, the term “anticancer agent” relates to any agentwhich is administered to a patient with cancer for the purposes oftreating the cancer.

The anti-cancer treatment defined herein may be applied as a soletherapy or may involve, in addition to the compound of the invention,conventional surgery or radiotherapy or chemotherapy. Such chemotherapymay include one or more of the following categories of anti-tumouragents:

(i) antiproliferative/antineoplastic/DNA-damaging agents andcombinations thereof, as used in medical oncology, such as alkylatingagents (for example cis-platin, carboplatin, cyclophosphamide, nitrogenmustard, melphalan, chloroambucil, busulphan and nitrosoureas);antimetabolites (for example antifolates such as fluoropyrimidines like5-fluorouracil and tegafur, raltitrexed, methotrexate, cytosinearabinoside, hydroxyurea and gemcitabine); antitumour antibiotics (forexample anthracyclines, like adriamycin, bleomycin, doxorubicin,daunomycin, epirubicin, idarubicin, mitomycin-C, dactinomycin andmithramycin); antimitotic agents (for example vinca alkaloids, likevincristine, vinblastine, vindesine and vinorelbine, and taxoids, liketaxol and taxotere); topoisomerase inhibitors (for exampleepipodophyllotoxins, like etoposide and teniposide, amsacrine,topotecan, irinotecan and camptothecin) and cell-differentiating agents(for example all-trans-retinoic acid, 13-cis-retinoic acid andfenretinide);

(ii) cytostatic agents, such as antioestrogens (for example tamoxifen,toremifene, raloxifene, droloxifene and iodoxyfene), oestrogen receptordownregulators (for example fulvestrant), antiandrogens (for examplebi-calutamide, flutamide, nilutamide and cyproterone acetate), LHRHantagonists or LHRH agonists (for example goserelin, leuprorelin andbuserelin), progesterones (for example megestrol acetate), aromataseinhibitors (for example as anastrozole, letrozole, vorazole andexemestane) and inhibitors of 5α-reductase, such as finasteride;

(iii) agents which inhibit cancer cell invasion (for examplemetallo-proteinase inhibitors, like marimastat, and inhibitors ofurokinase plasminogen activator receptor function);

(iv) inhibitors of growth factor function, for example such inhibitorsinclude growth factor antibodies, growth factor receptor antibodies (forexample the anti-erbb2 antibody trastuzumab [Herceptin™] and theanti-erbb1 antibody cetuximab [C225]), farnesyl transferase inhibitors,tyrosine kinase inhibitors and serine/threonine kinase inhibitors, forexample inhibitors of the epidermal growth factor family (for exampleEGFR family tyrosine kinase inhibitors, such asN-(3-chloro-4-fluorophenyl)-7-methoxy-6-(3-morpholinopropoxy)quinazolin-4-amine(gefitinib, AZD1839),N-(3-ethynylphenyl)-6,7-bis(2-methoxyethoxy)quinazolin-4-amine(erlotinib,OSI-774) and6-acrylamido-N-(3-chloro-4-fluorophenyl)-7-(3-morpholino-propoxy)quinazolin-4-amine(Cl 1033)), for example inhibitors of the platelet-derived growth factorfamily and for example inhibitors of the hepatocyte growth factorfamily;

(v)antiangiogenic agents, such as those which inhibit the effects ofvascular endothelial growth factor, (for example the anti-vascularendothelial cell growth factor antibody bevacizumab [Avastin™],compounds such as those disclosed in published international patentapplications WO 97/22596, WO 97/30035, WO 97/32856 and WO 98/13354) andcompounds that work by other mechanisms (for example linomide,inhibitors of integrin αvβ3 function and angiostatin);

(vi) vessel-damaging agents, such as combretastatin A4 and compoundsdisclosed in international patent applications WO 99/02166, WO 00/40529,WO 00/41669, WO 01/92224, WO 02/04434 and WO 02/08213;

(vii) antisense therapies, for example those which are directed to thetargets listed above, such as ISIS 2503, an anti-Ras antisense;

(viii) gene therapy approaches, including, for example, approaches forreplacement of aberrant genes, such as aberrant p53 or aberrant BRCA1 orBRCA2, GDEPT (gene-directed enzyme pro-drug therapy) approaches, such asthose using cytosine deaminase, thymidine kinase or a bacterialnitroreductase enzyme, and approaches for increasing patient toleranceto chemotherapy or radiotherapy, such as multi-drug resistance genetherapy; and

(ix) immunotherapy approaches, including, for example, ex-vivo andin-vivo approaches for increasing the immunogenicity of patient tumourcells, such as transfection with cytokines, such as interleukin 2,interleukin 4 or granulocyte-macrophage colony stimulating factor,approaches for decreasing T-cell anergy, approaches using transfectedimmune cells, such as cytokine-transfected dendritic cells, approachesusing cytokine-transfected tumour cell lines, and approaches usinganti-idiotypic antibodies.

The medicaments from Table 1 below are preferably, but not exclusively,combined with the compounds of the formula I.

TABLE 1 Alkylating agents Cyclophosphamide Lomustine BusulfanProcarbazine Ifosfamide Altretamine Melphalan Estramustine phosphateHexamethylmelamine Mechloroethamine Thiotepa Streptozocin chloroambucilTemozolomide Dacarbazine Semustine Carmustine Platinum agents CisplatinCarboplatin Oxaliplatin ZD-0473 (AnorMED) Spiroplatin Lobaplatin(Aetema) Carboxyphthalatoplatinum Satraplatin (Johnson TetraplatinMatthey) Ormiplatin BBR-3464 Iproplatin (Hoffmann-La Roche) SM-11355(Sumitomo) AP-5280 (Access) Antimetabolites Azacytidine TomudexGemcitabine Trimetrexate Capecitabine Deoxycoformycin 5-fluorouracilFludarabine Floxuridine Pentostatin 2-chlorodesoxyadenosine Raltitrexed6-Mercaptopurine Hydroxyurea 6-Thioguanine Decitabine (SuperGen)Cytarabine Clofarabine (Bioenvision) 2-fluorodesoxycytidine Irofulven(MGI Pharma) Methotrexate DMDC (Hoffmann-La Idatrexate Roche)Ethynylcytidine (Taiho) Topoisomerase Amsacrine Rubitecan (SuperGen)inhibitors Epirubicin Exatecan mesylate Etoposide (Daiichi) Teniposideor Quinamed (ChemGenex) mitoxantrone Gimatecan (Sigma-Tau) Irinotecan(CPT-11) Diflomotecan (Beaufour- 7-ethyl-10- Ipsen) hydroxycamptothecinTAS-103 (Taiho) Topotecan Elsamitrucin (Spectrum) Dexrazoxanet J-107088(Merck & Co) (TopoTarget) BNP-1350 (BioNumerik) Pixantrone (Novuspharma)CKD-602 (Chong Kun Rebeccamycin analogue Dang) (Exelixis) KW-2170 (KyowaHakko) BBR-3576 (Novuspharma) Antitumour Dactinomycin (ActinomycinAmonafide antibiotics D) Azonafide Doxorubicin (Adriamycin)Anthrapyrazole Deoxyrubicin Oxantrazole Valrubicin LosoxantroneDaunorubicin Bleomycin sulfate (Daunomycin) (Blenoxan) EpirubicinBleomycinic acid Therarubicin Bleomycin A Idarubicin Bleomycin BRubidazon Mitomycin C Plicamycinp MEN-10755 (Menarini) PorfiromycinGPX-100 (Gem Cyanomorpholinodoxo- Pharmaceuticals) rubicin Mitoxantron(Novantron) Antimitotic agents Paclitaxel SB 408075 Docetaxel(GlaxoSmithKline) Colchicine E7010 (Abbott) Vinblastine PG-TXL (CellVincristine Therapeutics) Vinorelbine IDN 5109 (Bayer) Vindesine A105972 (Abbott) Dolastatin 10 (NCI) A 204197 (Abbott) Rhizoxin(Fujisawa) LU 223651 (BASF) Mivobulin (Warner- D 24851 (ASTA Medica)Lambert) ER-86526 (Eisai) Cemadotin (BASF) Combretastatin A4 (BMS) RPR109881A (Aventis) Isohomohalichondrin-B TXD 258 (Aventis) (PharmaMar)Epothilone B (Novartis) ZD 6126 (AstraZeneca) T 900607 (Tularik)PEG-Paclitaxel (Enzon) T 138067 (Tularik) AZ10992 (Asahi) Cryptophycin52 (Eli Lilly) !DN-5109 (Indena) Vinflunine (Fabre) AVLB (PrescientAuristatin PE (Teikoku NeuroPharma) Hormone) Azaepothilon B (BMS) BMS247550 (BMS) BNP-7787 (BioNumerik) BMS 184476 (BMS) CA-4-prodrug(OXiGENE) BMS 188797 (BMS) Dolastatin-10 (NrH) Taxoprexin (Protarga)CA-4 (OXiGENE) Aromatase Aminoglutethimide Exemestan inhibitorsLetrozole Atamestan (BioMedicines) Anastrazole YM-511 (Yamanouchi)Formestan Thymidylate Pemetrexed (Eli Lilly) Nolatrexed (Eximias)synthase ZD-9331 (BTG) CoFactor ™ (BioKeys) inhibitors DNA antagonistsTrabectedin (PharmaMar) Mafosfamide (Baxter Glufosfamide (BaxterInternational) International) Apaziquone (Spectrum Albumin + 32P(Isotope Pharmaceuticals) Solutions) O6-benzylguanine Thymectacin(NewBiotics) (Paligent) Edotreotid (Novartis) Farnesyl Arglabin(NuOncology Tipifarnib (Johnson & transferase Labs) Johnson) inhibitorsIonafarnib (Schering- Perillyl alcohol (DOR Plough) BioPharma)BAY-43-9006 (Bayer) Pump inhibitors CBT-1 (CBA Pharma) ZosuquidarTariquidar (Xenova) trihydrochloride (Eli Lilly) MS-209 (Schering AG)Biricodar dicitrate (Vertex) Histone acetyl Tacedinaline (Pfizer)Pivaloyloxymethyl butyrate transferase inhibitors SAHA (Aton Pharma)(Titan) MS-275 (Schering AG) Depsipeptide (Fujisawa) MetalloproteinaseNeovastat (Aeterna Laboratories) CMT-3 (CollaGenex) inhibitorsMarimastat (British Biotech) BMS-275291 (Celltech) RibonucleosideGallium maltolate (Titan) Tezacitabine (Aventis) reductase inhibitorsTriapin (Vion) Didox (Molecules for Health) TNF-alpha Virulizin (LorusTherapeutics) Revimid (Celgene) agonists/ CDC-394 (Celgene) antagonistsEndothelin-A receptor Atrasentan (Abbot) YM-598 (Yamanouchi) antagonistsZD-4054 (AstraZeneca) Retinoic acid receptor Fenretinide (Johnson &Alitretinoin (Ligand) agonists Johnson) LGD-1550 (Ligand)Immunomodulators Interferon Dexosome therapy (Anosys) Oncophage(Antigenics) Pentrix (Australian Cancer GMK (Progenics) Technology)Adenocarcinoma vaccine JSF-154 (Tragen) (Biomira) Cancer vaccine(Intercell) CTP-37 (AVI BioPharma) Norelin (Biostar) JRX-2 (Immuno-Rx)BLP-25 (Biomira) PEP-005 (Peplin Biotech) MGV (Progenics) Synchrovaxvaccines (CTL !3-Alethin (Dovetail) Immuno) CLL-Thera (Vasogen) Melanomavaccine (CTL Immuno) p21-RAS vaccine (Gem- Vax) Hormonal and OestrogensPrednisone antihormonal Conjugated oestrogens Methylprednisolone agentsEthynyloestradiol Prednisolone chlorotrianisene AminoglutethimideIdenestrol Leuprolide Hydroxyprogesterone Goserelin caproate LeuporelinMedroxyprogesterone Bicalutamide Testosterone Flutamide Testosteronepropionate Octreotide Fluoxymesterone Nilutamide MethyltestosteroneMitotan Diethylstilbestrol P-04 (Novogen) Megestrol 2-Methoxyoestradiol(En- Tamoxifen treMed) Toremofin Arzoxifen (Eli Lilly) DexamethasonePhotodynamic Talaporfin (Light Sciences) Pd-Bacteriopheophorbid agentsTheralux (Theratechnologies) (Yeda) Motexafin-GadoliniumLutetium-Texaphyrin (Pharmacyclics) (Pharmacyclics) Hypericin Tyrosinekinase Imatinib (Novartis) Kahalide F (PharmaMar) inhibitorsLeflunomide(Sugen/Pharmacia) CEP-701 (Cephalon) ZDI839 (AstraZeneca)CEP-751 (Cephalon) Erlotinib (Oncogene Science) MLN518 (Millenium)Canertjnib (Pfizer) PKC412 (Novartis) Squalamine (Genaera) Phenoxodiol OSU5416 (Pharmacia) Trastuzumab (Genentech) SU6668 (Pharmacia) C225(ImClone) ZD4190 (AstraZeneca) rhu-Mab (Genentech) ZD6474 (AstraZeneca)MDX-H210 (Medarex) Vatalanib (Novartis) 2C4 (Genentech) PKI166(Novartis) MDX-447 (Medarex) GW2016 (GlaxoSmith- ABX-EGF (Abgenix)Kline) IMC-1C11 (ImClone) EKB-509 (Wyeth) EKB-569 (Wyeth) Various agentsSR-27897 (CCK-A inhibitor, BCX-1777 (PNP inhibitor, Sanofi-Synthelabo)BioCryst) Tocladesine (cyclic AMP Ranpirnase (ribonuclease agonist,Ribapharm) stimulant, Alfacell) Alvocidib (CDK inhibitor, Galarubicin(RNA synthesis Aventis) inhibitor, Dong-A) CV-247 (COX-2 inhibitor,Tirapazamine (reducing Ivy Medical) agent, SRI International) P54 (COX-2inhibitor, N-Acetylcysteine (reducing Phytopharm) agent, Zambon)CapCell ™ (CYP450 R-Flurbiprofen (NF-kappaB stimulant, Bavarian Nordic)inhibitor, Encore) GCS-IOO (gal3 antagonist, 3CPA (NF-kappaBGlycoGenesys) inhibitor, Active Biotech) G17DT immunogen (gastrinSeocalcitol (vitamin D inhibitor, Aphton) receptor agonist, Leo)Efaproxiral (oxygenator, 131-I-TM-601 (DNA Allos Therapeutics)antagonist, PI-88 (heparanase inhibitor, TransMolecular) Progen)Eflornithin (ODC inhibitor, Tesmilifen (histamine antagonist, ILEXOncology) YM BioSciences) Minodronic acid Histamine (histamine H2(osteoclast inhibitor, receptor agonist, Maxim) Yamanouchi) Tiazofurin(IMPDH inhibitor, Indisulam (p53 stimulant, Ribapharm) Eisai)Cilengitide (integrin antagonist, Aplidin (PPT inhibitor, Merck KGaA)PharmaMar) SR-31747 (IL-1 antagonist, Rituximab (CD20 antibody,Sanofi-Synthelabo) Genentech) CCI-779 (mTOR kinase Gemtuzumab (CD33inhibitor, Wyeth) antibody, Wyeth Ayerst) Exisulind (PDE-V inhibitor,PG2 (haematopoiesis Cell Pathways) promoter, Pharmagenesis) CP-461(PDE-V inhibitor, Immunol ™ (triclosan Cell Pathways) mouthwash, Endo)AG-2037 (GART inhibitor, Triacetyluridine (uridine Pfizer) prodrug,Wellstat) WX-UK1 (plasminogen SN-4071 (sarcoma agent, activatorinhibitor, Wilex) Signature BioScience) PBI-1402 (PMN stimulant,TransMID-107 ™ ProMetic LifeSciences) (immunotoxin, KS Bortezomib(proteasome Biomedix) inhibitor, Millennium) PCK-3145 (apoptosis SRL-172(T-cell stimulant, promoter, Procyon) SR Pharma) Doranidazole (apoptosisTLK-286 (glutathione-S promoter, Pola) transferase inhibitor, Telik)CHS-828 (cytotoxic agent, PT-100 (growth factor Leo) agonist, PointTherapeutics) Trans-retinic acid Midostaurin (PKC inhibitor,(differentiator, NIH) Novartis) MX6 (apoptosis promoter, Bryostatin-1(PKC stimulant, MAXIA) GPC Biotech) Apomine (apoptosis CDA-II (apoptosispromoter, promoter, ILEX Oncology) Everlife) Urocidin (apoptosis SDX-101(apoptosis promoter, promoter, Bioniche) Salmedix) Ro-31-7453 (apoptosisCeflatonin (apoptosis promoter, promoter, La Roche) ChemGenex)Brostallicin (apoptosis promoter, Pharmacia) Alkylating agentsCyclophosphamide Lomustine Busulfan Procarbazine Ifosfamide AltretamineMelphalan Estramustine phosphate Hexamethylmelamine MechloroethamineThiotepa Streptozocin chloroambucil Temozolomide Dacarbazine SemustineCarmustine Platinum agents Cisplatin Carboplatin Oxaliplatin ZD-0473(AnorMED) Spiroplatin Lobaplatin (Aetema) CarboxyphthalatoplatinumSatraplatin (Johnson Tetraplatin Matthey) Ormiplatin BBR-3464 Iproplatin(Hoffmann-La Roche) SM-11355 (Sumitomo) AP-5280 (Access) AntimetabolitesAzacytidine Tomudex Gemcitabine Trimetrexate CapecitabineDeoxycoformycin 5-fluorouracil Fludarabine Floxuridine Pentostatin2-chlorodesoxyadenosine Raltitrexed 6-Mercaptopurine Hydroxyurea6-Thioguanine Decitabine (SuperGen) Cytarabine Clofarabine (Bioenvision)2-fluorodesoxycytidine Irofulven (MGI Pharma) Methotrexate DMDC(Hoffmann-La Idatrexate Roche) Ethynylcytidine (Taiho) TopoisomeraseAmsacrine Rubitecan (SuperGen) inhibitors Epirubicin Exatecan mesylateEtoposide (Daiichi) Teniposide or Quinamed (ChemGenex) mitoxantroneGimatecan (Sigma-Tau) Irinotecan (CPT-11) Diflomotecan (Beaufour-7-ethyl-10- Ipsen) hydroxycamptothecin TAS-103 (Taiho) TopotecanElsamitrucin (Spectrum) Dexrazoxanet J-107088 (Merck & Co) (TopoTarget)BNP-1350 (BioNumerik) Pixantrone (Novuspharma) CKD-602 (Chong KunRebeccamycin analogue Dang) (Exelixis) KW-2170 (Kyowa Hakko) BBR-3576(Novuspharma) Antitumour Dactinomycin (Actinomycin Amonafide antibioticsD) Azonafide Doxorubicin (Adriamycin) Anthrapyrazole DeoxyrubicinOxantrazole Valrubicin Losoxantrone Daunorubicin Bleomycin sulfate(Daunomycin) (Blenoxan) Epirubicin Bleomycinic acid TherarubicinBleomycin A Idarubicin Bleomycin B Rubidazon Mitomycin C PlicamycinpMEN-10755 (Menarini) Porfiromycin GPX-100 (GemCyanomorpholinodoxorubicin Pharmaceuticals) Mitoxantron (Novantron)Antimitotic agents Paclitaxel SB 408075 Docetaxel (GlaxoSmithKline)Colchicine E7010 (Abbott) Vinblastine PG-TXL (Cell VincristineTherapeutics) Vinorelbine IDN 5109 (Bayer) Vindesine A 105972 (Abbott)Dolastatin 10 (NCI) A 204197 (Abbott) Rhizoxin (Fujisawa) LU 223651(BASF) Mivobulin (Warner- D 24851 (ASTA Medica) Lambert) ER-86526(Eisai) Cemadotin (BASF) Combretastatin A4 (BMS) RPR 109881A (Aventis)Isohomohalichondrin-B TXD 258 (Aventis) (PharmaMar) Epothilone B(Novartis) ZD 6126 (AstraZeneca) T 900607 (Tularik) PEG-Paclitaxel(Enzon) T 138067 (Tularik) AZ10992 (Asahi) Cryptophycin 52 (Eli Lilly)!DN-5109 (Indena) Vinflunine (Fabre) AVLB (Prescient Auristatin PE(Teikoku NeuroPharma) Hormone) Azaepothilon B (BMS) BMS 247550 (BMS)BNP-7787 (BioNumerik) BMS 184476 (BMS) CA-4-prodrug (OXiGENE) BMS 188797(BMS) Dolastatin-10 (NrH) Taxoprexin (Protarga) CA-4 (OXiGENE) AromataseAminoglutethimide Exemestan inhibitors Letrozole Atamestan(BioMedicines) Anastrazole YM-511 (Yamanouchi) Formestan ThymidylatePemetrexed (Eli Lilly) Nolatrexed (Eximias) synthase ZD-9331 (BTG)CoFactor ™ (BioKeys) inhibitors DNA antagonists Trabectedin (PharmaMar)Mafosfamide (Baxter Glufosfamide (Baxter International) International)Apaziquone (Spectrum Albumin + 32P (Isotope Pharmaceuticals) Solutions)O6-benzylguanine Thymectacin (NewBiotics) (Paligent) Edotreotid(Novartis) Farnesyl Arglabin (NuOncology Tipifarnib (Johnson &transferase Labs) Johnson) inhibitors Ionafarnib (Schering- Perillylalcohol (DOR Plough) BioPharma) BAY-43-9006 (Bayer) Pump inhibitorsCBT-1 (CBA Pharma) Zosuquidar Tariquidar (Xenova) trihydrochloride (EliLilly) MS-209 (Schering AG) Biricodar dicitrate (Vertex) Histone acetylTacedinaline (Pfizer) Pivaloyloxymethyl butyrate transferase SAHA (AtonPharma) (Titan) inhibitors MS-275 (Schering AG) Depsipeptide (Fujisawa)Metalloproteinase Neovastat (Aeterna CMT-3 (CollaGenex) inhibitorsLaboratories) BMS-275291 (Celltech) Ribonucleoside Marimastat (BritishTezacitabine (Aventis) reductase Biotech) Didox (Molecules forinhibitors Gallium maltolate (Titan) Health) Triapin (Vion) TNF-alphaVirulizin (Lorus Revimid (Celgene) agonists/ Therapeutics) antagonistsCDC-394 (Celgene) Endothelin-A Atrasentan (Abbot) YM-598 (Yamanouchi)receptor ZD-4054 (AstraZeneca) antagonists Retinoic acid Fenretinide(Johnson & Alitretinoin (Ligand) receptor agonists Johnson) LGD-1550(Ligand) Immuno- Interferon Dexosome therapy modulators Oncophage(Antigenics) (Anosys) GMK (Progenics) Pentrix (Australian CancerAdenocarcinoma vaccine Technology) (Biomira) JSF-154 (Tragen) CTP-37(AVI BioPharma) Cancer vaccine (Intercell) JRX-2 (Immuno-Rx) Norelin(Biostar) PEP-005 (Peplin Biotech) BLP-25 (Biomira) Synchrovax vaccines(CTL MGV (Progenics) Immuno) !3-Alethin (Dovetail) Melanoma vaccine (CTLCLL-Thera (Vasogen) Immuno) p21-RAS vaccine (GemVax) Hormonal andOestrogens Prednisone antihormonal Conjugated oestrogensMethylprednisolone agents Ethynyloestradiol Prednisolonechlorotrianisene Aminoglutethimide Idenestrol LeuprolideHydroxyprogesterone Goserelin caproate Leuporelin MedroxyprogesteroneBicalutamide Testosterone Flutamide Testosterone propionate OctreotideFluoxymesterone Nilutamide Methyltestosterone Mitotan DiethylstilbestrolP-04 (Novogen) Megestrol 2-Methoxyoestradiol Tamoxifen (EntreMed)Toremofin Arzoxifen (Eli Lilly) Dexamethasone Photodynamic Talaporfin(Light Sciences) Pd-Bacteriopheophorbid agents Theralux (Yeda)(Theratechnologies) Lutetium-Texaphyrin Motexafin-Gadolinium(Pharmacyclics) (Pharmacyclics) Hypericin Tyrosine kinase Imatinib(Novartis) Kahalide F (PharmaMar) inhibitorsLeflunomide(Sugen/Pharmacia) CEP-701 (Cephalon) ZDI839 (AstraZeneca)CEP-751 (Cephalon) Erlotinib (Oncogene MLN518 (Millenium) Science)PKC412 (Novartis) Canertjnib (Pfizer) Phenoxodiol O Squalamine (Genaera)Trastuzumab (Genentech) SU5416 (Pharmacia) C225 (ImClone) SU6668(Pharmacia) rhu-Mab (Genentech) ZD4190 (AstraZeneca) MDX-H210 (Medarex)ZD6474 (AstraZeneca) 2C4 (Genentech) Vatalanib (Novartis) MDX-447(Medarex) PKI166 (Novartis) ABX-EGF (Abgenix) GW2016 IMC-1C11 (ImClone)(GlaxoSmithKline) EKB-509 (Wyeth) EKB-569 (Wyeth) Various agentsSR-27897 (CCK-A BCX-1777 (PNP inhibitor, inhibitor, Sanofi- BioCryst)Synthelabo) Ranpirnase (ribonuclease Tocladesine (cyclic AMP stimulant,Alfacell) agonist, Ribapharm) Galarubicin (RNA Alvocidib (CDK inhibitor,synthesis inhibitor, Dong- Aventis) A) CV-247 (COX-2 inhibitor,Tirapazamine (reducing Ivy Medical) agent, SRI International) P54 (COX-2inhibitor, N-Acetylcysteine (reducing Phytopharm) agent, Zambon)CapCell ™ (CYP450 R-Flurbiprofen (NF-kappaB stimulant, Bavarian Nordic)inhibitor, Encore) GCS-IOO (gal3 antagonist, 3CPA (NF-kappaBGlycoGenesys) inhibitor, Active Biotech) G17DT immunogen Seocalcitol(vitamin D (gastrin inhibitor, Aphton) receptor agonist, Leo)Efaproxiral (oxygenator, 131-I-TM-601 (DNA Allos Therapeutics)antagonist, PI-88 (heparanase TransMolecular) inhibitor, Progen)Eflornithin (ODC inhibitor, Tesmilifen (histamine ILEX Oncology)antagonist, YM Minodronic acid BioSciences) (osteoclast inhibitor,Histamine (histamine H2 Yamanouchi) receptor agonist, Maxim) Indisulam(p53 stimulant, Tiazofurin (IMPDH Eisai) inhibitor, Ribapharm) Aplidin(PPT inhibitor, Cilengitide (integrin PharmaMar) antagonist, Merck KGaA)Rituximab (CD20 antibody, SR-31747 (IL-1 antagonist, Genentech)Sanofi-Synthelabo) Gemtuzumab (CD33 CCI-779 (mTOR kinase antibody, WyethAyerst) inhibitor, Wyeth) PG2 (haematopoiesis Exisulind (PDE-Vinhibitor, promoter, Pharmagenesis) Cell Pathways) Immunol ™ (triclosanCP-461 (PDE-V inhibitor, mouthwash, Endo) Cell Pathways)Triacetyluridine (uridine AG-2037 (GART inhibitor, prodrug, Wellstat)Pfizer) SN-4071 (sarcoma agent, WX-UK1 (plasminogen SignatureBioScience) activator inhibitor, Wilex) TransMID-107 ™ PBI-1402 (PMNstimulant, (immunotoxin, KS ProMetic LifeSciences) Biomedix) Bortezomib(proteasome PCK-3145 (apoptosis inhibitor, Millennium) promoter,Procyon) SRL-172 (T-cell stimulant, Doranidazole (apoptosis SR Pharma)promoter, Pola) TLK-286 (glutathione-S CHS-828 (cytotoxic agent,transferase inhibitor, Telik) Leo) PT-100 (growth factor Trans-retinicacid agonist, Point (differentiator, NIH) Therapeutics) MX6 (apoptosispromoter, Midostaurin (PKC inhibitor, MAXIA) Novartis) Apomine(apoptosis Bryostatin-1 (PKC promoter, ILEX Oncology) stimulant, GPCBiotech) Urocidin (apoptosis CDA-II (apoptosis promoter, Bioniche)promoter, Everlife) Ro-31-7453 (apoptosis SDX-101 (apoptosis promoter,La Roche) promoter, Salmedix) Brostallicin (apoptosis Ceflatonin(apoptosis promoter, Pharmacia) promoter, ChemGenex)

A combined treatment of this type can be achieved with the aid ofsimultaneous, consecutive or separate dispensing of the individualcomponents of the treatment. Combination products of this type employthe compounds according to the invention.

Assays

The compounds of the formula I described in the examples were tested bythe assays described below and were found to have kinase inhibitoryactivity. Other assays are known from the literature and could readilybe performed by the person skilled in the art (see, for example,Dhanabal et al., Cancer Res. 59:189-197; Xin et al., J. Biol. Chem.274:9116-9121; Sheu et al., Anticancer Res. 18:4435-4441; Ausprunk etal., Dev. Biol. 38:237-248; Gimbrone et al., J. Natl. Cancer Inst.52:413-427; Nicosia et al., In Vitro 18:538- 549).

Measurement of Met kinase Activity

According to the manufacturer's data (Met, active, upstate, catalogueNo. 14-526), Met kinase is expressed for the purposes of proteinproduction in insect cells (Sf21; S. frugiperda) and subsequentaffinity-chromatographic purification as “N-terminal 6His-tagged”recombinant human protein in a baculovirus expression vector.

The kinase activity can be measured using various available measurementsystems. In the scintillation proximity method (Sorg et al., J. ofBiomolecular Screening, 2002, 7, 11-19), the flashplate method or thefilter binding test, the radioactive phosphorylation of a protein orpeptide as substrate is measured using radioactively labelled ATP(³²P-ATP, ³³P-ATP). In the case of the presence of an inhibitorycompound, a reduced radioactive signal, or none at all, can be detected.Furthermore, homogeneous time-resolved fluorescence resonance energytransfer (HTR-FRET) and fluoroescence polarisation (FP) technologies canbe used as assay methods (Sills et al., J. of Biomolecular Screening,2002, 191-214).

Other non-radioactive ELISA assay methods use specificphospho-antibodies (phospho-ABs). The phospho-antibody only binds thephosphorylated substrate. This binding can be detected bychemiluminescence using a second peroxidase-conjugated antibody (Ross etal., 2002, Biochem. J.).

Flashplate Method (Met Kinase)

The test plates used are 96-well Flashplate^(R) microtitre plates fromPerkin Elmer (Cat. No. SMP200). The components of the kinase reactiondescribed below are pipetted into the assay plate. The Met kinase andthe substrate poly Ala-Glu-Lys-Tyr, (pAGLT, 6:2:5:1), are incubated for3 hrs at room temperature with radioactively labelled ³³P-ATP in thepresence and absence of test substances in a total volume of 100 μl. Thereaction is terminated using 150 μl of a 60 mM EDTA solution. Afterincubation for a further 30 min at room temperature, the supernatantsare filtered off with suction, and the wells are washed three times with200 μl of 0.9% NaCl solution each time. The measurement of the boundradioactivity is carried out by means of a scintillation measuringinstrument (Topcount NXT, Perkin-Elmer).

The full value used is the inhibitor-free kinase reaction. This shouldbe approximately in the range 6000-9000 cpm. The pharmacological zerovalue used is staurosporin in a final concentration of 0.1 mM. Theinhibitory values (IC50) are determined using the RS1_MTS program.

Kinase Reaction Conditions Per Well:

30 μl of assay buffer

10 μl of substance to be tested in assay buffer with 10% of DMSO

10 μl of ATP (final concentration 1 μM cold, 0.35 μCi of ³³P-ATP)

50 μl of Met kinase/substrate mixture in assay buffer;

-   -   (10 ng of enzyme/well, 50 ng of pAGLT/well)    -   Solutions Used:        -   Assay buffer:    -   50 mM HEPES        -   3 mM magnesium chloride        -   3 μM sodium orthovanadate        -   3 mM manganese(II) chloride        -   1 mM dithiothreitol (DTT)    -   pH=7.5 (to be set using sodium hydroxide)        -   Stop Solution:    -   60 mM Titriplex III (EDTA)        -   ³³P-ATP: Perkin-Elmer;        -   Met kinase: Upstate, Cat. No. 14-526, Stock 1 μg/10 μl;            spec. activity 954 U/mg;    -   Poly-Ala-Glu-Lys-Tyr, 6:2:5:1: Sigma Cat. No. P1152

In-Vivo Tests (FIG. 1/1)

Experimental procedure: Female Balb/C mice (breeder: Charles River Wiga)were 5 weeks old on arrival. They were acclimatised to our keepingconditions for 7 days. Each mouse was subsequently injectedsubcutaneously in the pelvic area with 4 million TPR-Met/NIH3T3 cells in100 μl of PBS (without Ca++ and Mg++). After 5 days, the animals wererandomised into 3 groups, so that each group of 9 mice had an averagetumour volume of 110 μl (range: 55-165). 100 μl of vehicle (0.25%methylcellulose/100 mM acetate buffer, pH 5.5) were administered dailyto the control group, and 200 mg/kg of “A56” or “A91” dissolved in thevehicle (volume likewise 100 μl/animal) were administered daily to thetreatment groups, in each case by gastric tube. After 9 days, thecontrols had an average volume of 1530 μl and the experiment wasterminated.

Measurement of the tumour volume: The length (L) and breadth (B) weremeasured using a Vernier calliper, and the tumour volume was calculatedfrom the formula L×B×B/2.

Keeping conditions: 4 or 5 animals per cage, feeding with commercialmouse food (Sniff).

The compounds “A18” and “A22” have a significant antitumoural action.

Above and below, all temperatures are indicated in ° C. In the followingexamples, “conventional work-up” means: water is added if necessary, thepH is adjusted, if necessary, to values between 2 and 10, depending onthe constitution of the end product, the mixture is extracted with ethylacetate or dichloromethane, the phases are separated, the organic phaseis dried over sodium sulfate and evaporated; and the residue is purifiedby chromatography on silica gel and/or by crystallisation. Rf values onsilica gel; eluent: ethyl acetate/methanol 9:1.

Mass spectrometry (MS): El (electron impact ionisation) M⁺

-   -   FAB (fast atom bombardment) (M+H)⁺    -   ESI (electrospray ionisation) (M+H)⁺

APCI-MS (atmospheric pressure chemical ionisation—mass spectrometry)(M+H)⁺.

Mass spectrometry (MS): El (electron impact ionisation) M⁺

-   -   FAB (fast atom bombardment) (Mi-F1)⁺    -   ESI (electrospray ionisation) (M+H)⁺

APCI-MS (atmospheric pressure chemical ionisation—mass spectrometry)(M+H)⁺.

HPLC Methods:

HPLC/MS Analyses

are carried out in a 3μ Silica-Rod column with a 210 second gradientfrom 20 to 100% water/acetonitrile/0.01% of trifluoroacetic acid, at aflow rate of 2.2 ml/min, and detection at 220 nm.

HPLC Analyses (Method A)

Column: Chromolith RP18e 100*3 mm

Flow rate: 2 ml/min

Solvent A: H₂O+0.1% of trifluoroacetic acid

Solvent B: acetonitrile+0.1% of trifluoroacetic acid

Gradient 5 min

0-4 min: 99:1→1:99

4-5 min: 1:99-1:99

HPLC Analyses (Method B)

Column: Chromolith RP18e 100*3 mm

Flow rate: 4 ml/min

Solvent A: H₂O+0.05% of HCOOH

Solvent B: acetonitrile+10% of solvent A

Gradient 8 min

0-1 min: 99:1→99:1

1-7 min: 99:1-1:99

7-8 min: 1:99→1:99

Retention time Rt in minutes [min].

EXAMPLE 1

The preparation of2-[3-(5-bromopyrimidin-2-yl)benzyl]-6-cyclopropyl-2H-pyridazin-3-one(“A1”) and6-cyclopropyl-2-(3-{5-[1-(2-pyrrolidin-1-ylethyl)-1H-pyrazol-4-yl]pyrimidin-2-yl}benzyl)-2H-pyridazin-3-one(“A2”) is carried out analogously to the following scheme:

1.1 A mixture of 16.6 g (180 mmol) of glyoxylic acid monohydrate and 50ml (535 mmol) of cyclopropyl methyl ketone is heated at 120° C. for twohours with stirring. The reaction mixture is cooled to 40° C., and 70 mlof water and 14 ml of 32% aqueous ammonia solution are added. Thismixture is extracted three times with dichloromethane. 8.7 ml (179 mmol)of hydrazinium hydroxide are added to the aqueous phase, and the mixtureis heated at reflux for one hour. The reaction mixture is cooled to roomtemperature. The precipitate formed is filtered off with suction, washedwith water and dried in vacuo: 6-cyclopropyl-2H-pyridazin-3-one ascolourless crystals; ESI 137.

1.2 A solution of 318 g (3.00 mmol) of sodium carbonate in 1.5 l ofwater is added to a solution, kept under nitrogen, of 427 g (1.50 mol)of 5-bromo-2-iodopyrimidine in 1.5 l of toluene. This mixture is warmedto 80° C., and 34.7 g (30 mmol) of tetrakis(triphenylphosphine)palladiumand a solution of 228 g (1.50 mol) of 3-(hydroxymethyl)benzeneboronicacid in 3 l of ethanol are added. The reaction mixture is subsequentlyheated at reflux for 18 hours. The reaction mixture is cooled to roomtemperature, filtered and partitioned between water and tent-butylmethyl ether. The organic phase is dried over sodium sulfate andconcentrated to a volume of 1 l. The precipitate formed is filtered offwith suction and washed with toluene:[3-(5-bromopyrimidin-2-yl)-phenyl]methanol as colourless crystals; ESI265, 267.

1.3 .A solution, kept under nitrogen, of 2.23 g (8.41 mmol) of[3-(5-bromo-pyrimidin-2-yl)phenyl]methanol, 1.49 g (10.9 mmol) of6-cyclopropyl-2H-pyridazin-3-one and 3.34 g (12.6 mmol) oftriphenyiphosphine in 80 ml of THF is cooled in an ice bath, and 2.61 ml(12.6 mmol) of diisopropyl azodicarboxylate (DIAD) are slowly addeddropwise. The reaction mixture is stirred at room temperature for 2hours and evaporated. The residue is chromatographed on a silica-gelcolumn with dichloromethane/methanol as eluent. The product-containingfractions are combined, evaporated and recrystallised from isopropanol:2-[3-(5-bromopyrimidin-2-yl)benzyl]-6-cyclopropyl-2H-pyridazin-3-one(“A1”) as colourless crystals; ESI 383, 385;

¹H-NMR (DMSO-d₅): δ [ppm] 0.80 (m, 2H), 0.93 (m, 2H), 1.96 (m, 1H), 5.26(s, 2H), 6.91 (d, J=9.5 Hz, 1H), 7.29 (d, J=9.5 Hz, 1H), 7.46 (dt,J₁=7.5 Hz, J₂=1 Hz, 1H), 7.51 (t, J=7.5 Hz, 1H), 8.27 (dt, J₁=7.5 Hz,J₂=1 Hz, 1H), 8.30 (t, J=1 Hz, 1H), 9.07 (s, 2H).

1.4 15.0 g (86.7 mmol) of N-(2-chloroethyl)pyrrolidine hydrochloride and42.4 g (130 mmol) of caesium carbonate are added to a solution of 8.58 g(43.3 mmol) of pinacolyl pyrazole-4-boronate in 86 ml of acetonitrile,and the suspension formed is stirred at room temperature for 18 hours.The reaction mixture is filtered, and the residue is washed withacetonitrile. The filtrate is evaporated, and the residue is partitionedbetween saturated sodium chloride solution and ethyl acetate. Theorganic phase is dried over sodium sulfate and evaporated: 10.9 g of1-(2-pyrrolidin-1-ylethyl)-4-(4,4,5,5-tetra-methyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazoleas yellow oil; ESI 292.

1.5 425 mg (2.0 mmol) of tripotassium phosphate trihydrate and 56.2 mg(0.08 mmol) of bis(triphenylphosphine)palladium chloride are added to asolution, kept under nitrogen, of 394 mg (1.00 mmol) of2-[3-(5-bromo-pyrimidin-2-yl)benzl]-6-cyclopropyl-2H-pyridazin-3-one and337 mg (1.10 mmol) of1-(2-pyrrolidin-1-ylethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxa-borolan-2-yl)-1H-pyrazolein 10 ml of 1,2-dimethoxyethane, and the mixture is stirred at 80° C.for 18 hours. The reaction mixture is filtered through kieselguhr andwashed with dichloromethane. The filtrate is evaporated, and the residueis chromatographed on a silica-gel column with dichloromethane/-methanolas eluent:6-cyclopropyl-2-(3-{5-[1-(2-pyrrolidin-1-ylethyl)-1H-pyrazol-4-yl]pyrimidin-2-yl}benzyl)-2H-pyridazin-3-one(“A2”) as colourless oil; ESI 468;

¹H-NMR (DMSO-d₆): δ [ppm] 0.82 (m, 2H), 0.95 (m, 2H), 1.68 (m, 4H), 1.98(m, 1H), 2.51 (m, 4H), 2.88 (t, J=6.8 Hz, 2H), 4.28 (t, J=6.8 Hz, 2H),5.28 (s, 2H), 6.93 (d, J=9.5 Hz, 1H), 7.31 (d, J=9.5 Hz, 1H), 7.42 (d,J=7.5 Hz, 1H), 7.50 (t, J=7.5 Hz, 1H), 8.11 (s, 1H), 8.31 (d, J=7.5 Hz,1H), 8.33 (bs, 1H), 8.45 (s, 1H), 9.14 (s, 2H).

The following compounds are obtained analogously:

6-cyclopropyl-2-(3-}5-[1-(2-morpholin-4-ylethyl)-1H-pyrazol-4-yl]-pyrimidin-2-yl}benzyl)-2H-pyridazin-3-one

ESI 484;

6-cyclobutyl-2-(3-{5-[1-(2-pyrrolidin-1-ylethyl)-1H-pyrazol-4-yl]pyrimidin-2-yl}benzyl)-2H-pyridazin-3-one

¹H-NMR (d₆-DMSO): δ [ppm] 1.67 (m, 4H), 1.83 (m, 1H), 1.97 (m, 1H), 2.21(m, 4H), 2.49 (m, 4H), 2.87 (t, J=6.8 Hz, 2H), 3.50 (quintet, J=8.5 Hz,1H), 4.26 (t, J=6.8 Hz, 2H), 5.32 (s, 2H), 6.96 (d, J=9.5 Hz, 1H), 7.43(d, J=7.5 Hz, 1H), 7.45 (d, J=9.5 Hz, 1H), 7.50 (t, J=7.5 Hz, 1H), 8.10(s, 1H), 8.30 (d, J=7.5 Hz, 1H), 8.36 (bs, 1H), 8.44 (s, 1H), 9.12 (s,2H).

EXAMPLE 2

The preparation of6-cyclopropyl-2-[3-(5-methylpyrimidin-2-yl)benzyl]-2H-pyridazin-3-one(“A4”) is carried out analogously to the following scheme:

2.1 1.31 ml (11.0 mmol) of 3-ethoxymethacrolein and 2.04 ml (11.0 mmol)of a 30% solution of sodium ethoxide in methanol are added to asuspension of 2.41 g (10.0 mmol) of methyl 3-carbamimidoylbenzoateacetate in 40 ml of methanol, and the resultant solution is stirred at50° C. for 18 hours. The reaction mixture is evaporated in vacuo, andwater is added. The precipitate formed is filtered off with suction,washed with water and dried in vacuo: methyl3-(5-methylpyrimidin-2-yl)benzoate as colourless crystals; ESI 229.

2.2 600 mg (5.41 mmol) of powdered calcium chloride are added to asuspension of 400 mg (10.6 mmol) of sodium borohydride in 20 ml of THF,and the mixture is stirred at room temperature for 1.5 hours. A solutionof 751 mg (3.29 mmol) of methyl 3-(5-methylpyrimidin-2-yl)benzoate in 10ml of THF is added dropwise to this suspension with stirring, and themixture is stirred at room temperature for 18 hours. 10 ml of 1 N NaOH,water and dichloromethane are added to the reaction mixture, which isthen filtered. The organic phase of the filtrate is separated off, driedover sodium sulfate and evaporated. The residue is chromatographed on asilica-gel column with dichloromethane/methanol as eluent:[3-(5-methylpyrimidin-2-yl)phenyl]-methanol as colourless solid; ESI201.

2.3 147 μl (0.75 mmol) of diisopropyl diazodicarboxylate are addeddropwise to a solution of 68.1 mg (0.50 mmol) of6-cyclopropyl-2H-pyridazin-3-one, 100 mg (0.50 mmol) of[3-(5-methylpyrimidin-2-yl)phenyl]methanol and 197 mg (0.75 mmol) oftriphenylphosphine in 3 ml of THF, and the resultant solution is stirredat room temperature for 18 hours. The reaction mixture is evaporated invacua, and the residue is chromatographed on a silica-gel column withdichloromethane/methanol as eluent:6-cyclopropyl-2-[3-(5-methyl-pyrimidin-2-yl)benzyl]-2H-pyridazin-3-one(“A4”) as colourless solid; ESI 319.

EXAMPLE 3

The preparation of6-cyclopropyl-2-{3-[5-(1-piperidin-4-yl-1H-pyrazol-4-yl)-pyrimidin-2-yl]benzyl}-2H-pyridazin-3-one(“A5”) is carried out analogously to the following scheme:

3.1 637 mg (3.0 mmol) of tripotassium phosphate trihydrate and 84.2 mg(0.12 mmol) of bis(triphenylphosphine)palladium chloride are added to asolution, kept under nitrogen, of 599 mg (1.50 mmol) of2-[3-(5-bromopyrimidin-2-yl)benzyl]-6-cyclopropyl-2H-pyridazin-3-one and623 mg (1.65 mmol) of tert-butyl4-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazol-1-yl]-piperidine-1-carboxylate(prepared as described in WO 2007/066187) in 15 ml of1,2-dimethoxyethane, and the mixture is stirred at 80° C. for 18 hours.The reaction mixture is filtered through kieselguhr and washed withdichloromethane. The filtrate is washed with water. The organic phase isdried over sodium sulfate and evaporated. The residue is chromatographedon a silica-gel column with dichloromethane/methanol as eluent:tert-butyl4-(4-{2-[3-(3-cyclopropyl-6-oxo-6H-pyridazin-1-ylmethyl)phenyl]pyrimidin-5-yl}pyrazol-1-yl)piperidine-1-carboxylateas yellowish high-viscosity oil; ESI 554.

3.2 2 ml of methanol are added to a suspension of 692 mg (1.24 mmol) oftert-butyl4-(4-{2-[3-(3-cyclopropyl-6-oxo-6H-pyridazin-1-ylmethyl)phenyl]-pyrimidin-5-yl}pyrazol-1-yl)piperidine-1-carboxylatein 5 ml of 4 N HCl in dioxane, and the mixture is heated at 80° C. for 5minutes. The reaction mixture is evaporated, and water, dichloromethaneand saturated sodium hydrogencarbonate solution are added successively.The organic phase is separated off, dried over sodium sulfate andevaporated. The residue is recrystallised from tert-butyl methyl ether:6-cyclopropyl-2-{3-[5-(1-piperidin-4-yl-1H-pyrazol-4-yl)pyrimidin-2-yl]benzyl}-2H-pyridazin-3-one(“A5”) as colourless crystals; ESI 454;

¹H-NMR (DMSO-d₆): δ [ppm] 0.81 (m, 2H), 0.94 (m, 2H) 1.80 (m, 2H), 1.99(m, 3H), 2.60 (m, 2H), 3.05 (m, 2H), 4.23 (m, 1H), 5.27 (s, 2H), 6.92(d, J=9.5 Hi, 1H), 7.30 (d, J=9.5 Hz, 1H), 7.41 (d, J=7.5 Hz, 1H), 7.49(t, J=7.5 Hz, 1H), 8.10 (s, 1H), 8.30 (d, J=7.5 Hz, 1H), 8.33 (bs, 1H),8.48 (s, 1H), 9.14 (s, 2H).

The compound

6-methyl-2-{3-[5-(1-piperidin-4-yl-1H-pyrazol-4-yl)pyrimidin-2-yl]benzl}-2H-pyridazin-3-one

ESI 428 is obtained analogously.

EXAMPLE 4

The preparation of6-cyclopropyl-2-[3-(5-methyl-1,2,4-oxadiazol-3-yl)benzyl]-2H-pyridazin-3-one(“A7”) is carried out analogously to the following scheme:

169 mg (1.0 mmol) of caesium carbonate are added to a solution of 68.1mg (0.50 mol) of 6-cyclopropyl-2H-pyridazin-3-one and 126.5 mg (0.50mmol) of 3-(3-bromomethylphenyl)-5-methyl-1,2,4-oxadiazole (prepared asdescribed by W. W. K. R. Mederski et al., Tetrahedron 55, 1999,12757-12770) in 1 ml of dimethylformamide (DMF), and the suspensionformed is stirred at room temperature for 18 hours. Water and tert-butylmethyl ether are added to the reaction mixture. The organic phase isseparated off, dried over sodium sulfate and evaporated. The residue ischromatographed on a silica-gel column with dichloromethane/methanol aseluent:6-cyclopropyl-2-[3-(5-methyl-1,2,4-oxadiazol-3-yl)benzyl]-2H-pyridazin-3-one(“A7”) as colourless crystals; ESI 309.

EXAMPLE 5

The preparation of6-cyclopropyl-2-{3-[5-(3-dimethylaminopropoxy)pyrimidin-2-yl]benzyl}-2H-pyridazin-3-one(“A8”) is carried out analogously to the following scheme:

5.1 1382 g (10.0 mol) of potassium carbonate are added in portions withstirring to a suspension, held at 30° C., of 500 g (3.40 mol) of3-cyanobenzoic acid in 8 l of methanol 695 g (10.0 mol) ofhydroxylammonium chloride are subsequently added in small portions at aninternal temperature of 40 to 45° C. The reaction mixture is then heatedat the boil for 15 hours. The reaction mixture is evaporated in vacua,dissolved in water and acidified using 37% aqueous hydrochloric acid.The precipitate formed is filtered off with suction, washed with waterand dried in vacua: 3-(N-hydroxycarbamimidoyl)-benzoic acid ascolourless crystals; ESI 181.

5.2 A mixture of 614 g (3.41 mol) of 3-(N-hydroxycarbamimidoyl)benzoicacid, 756 ml (8.0 mol) of acetic anhydride and 2 l of acetic acid isheated at a temperature of 118° C. for 14 hours. The reaction mixture iscooled to 6° C. and filtered with suction. The residue is taken up in 2l of water, filtered off with suction and washed well with water. Theresidue is recrystallised from ethanol/water:3-(5-methyl-1,2,4-oxadiazol-3-yl)benzoic acid as colourless crystals; m.p. 225° C.; ESI 205.

5.3 7.83 ml (147 mmol) of concentrated sulfuric acid are added to asuspension of 30.0 g (147 mmol) of3-(5-methyl-1,2,4-oxadiazoi-3-yl)benzoic acid in 150 ml of methanol, andthe mixture is heated at the boil for 18 hours. The reaction mixture iscooled in an ice bath, water is added, and the product is filtered offwith suction and washed well with water: methyl3-(5-methyl-1,2,4-oxadiazol-3-yl)benzoate as colourless crystals; ESI219.

5.4 150 ml of acetic acid, 150 ml of water and 50 g of water-moist Raneynickel are added to a solution of 327 g (1.47 mol) of methyl3-(5-methyl-1,2,4-oxadiazol-3-yl)benzoate in 3 l of methanol, and themixture is hydrogenated at room temperature and atmospheric pressure for18 hours. The catalyst is filtered off, and the filtrate is evaporated.The residue is taken up in tert-butyl methyl-ether, heated to the boiland filtered off with suction. The residue is dried in vacuo:3-methoxycarbonylbenzamidinium acetate as colourless crystals; ESI 179.

5.5 2.2 l of a freshly prepared 1.5 M sodium methoxide solution areadded dropwise with stirring to a suspension of 259 g (1.09 mol) of3-methoxycarbonylbenzamidinium acetate and 528 g (1.08 mol) of({2-dimethylamino-1-[dimethylimmoniomethyl]vinylaminolmethylene)dimethyl-ammoniumdihexafluorophosphate (prepared as described by C. B. Dousson et al.,Synthesis 2005, 1817) in 1 l of methanol. The reaction mixture is thenwarmed to 60° C. over the course of 40 min and held at this temperaturefor 30 min. The reaction mixture is then cooled to room temperature,diluted with 10 l of dichloromethane and washed three times with 5 l ofwater each time. The organic phase is dried over sodium sulfate andevaporated. The residue is recrystallised from ethyl acetate: methyl3-[5-(dimethylaminomethylene-amino)pyrimidin-2-yl]benzoate as beigecrystals; m.p. 140° C., ESI 285.

5.6 160 ml (2.88 mol) of concentrated sulfuric acid are added to asuspension of 103.5 g (364 mmol) of methyl3-[5-(dimethylaminomethylene-amino)pyrimidin-2-yl]benzoate in 1.3 l ofwater, and the mixture is heated at the boil for 4 hours. The reactionmixture is cooled to room temperature, diluted with water and filteredwith suction. The residue is washed with water and dried in vacua:3-(5-hydroxypyrimidin-2-yl)benzoic acid as brownish crystals; ESI 217.

5.7 32.7 ml (445 mmol) of thionyl chloride are added to a suspension of88.0 g (366 mmol) of 3-(5-hydroxypyrimidin-2-yl)benzoic acid in 1.4 l ofmethanol, and the mixture is heated at 80° C. for 2 hours. 20 ml (276mmol) of thionyl chloride and a further 10 ml (138 mmol) of thionylchloride are then added. After each addition, the reaction mixture isstirred at 80° C. for 2 hours. The reaction mixture is concentrated to avolume of approx. 300 ml in vacuo, and the precipitate formed isfiltered off and dried in vacuo: methyl3-(5-hydroxypyrimidin-2-yl)benzoate as brownish crystals; ESI 231.

5.8 A solution, kept under nitrogen, of 6.1 g (26.5 mmol) of methyl(5-hydroxypyrimidin-2-yl)benzoate, 10.5 g (39.8 mmol) oftriphenylphosphine and 4.76 ml (39.8 mmol) of3-(dimethylamino)-1-propanol in 200 ml of THF is cooled in an ice bath,and 8.21 ml (39.8 mmol) of diisopropyl azodicarboxylate are slowly addeddropwise with stirring. After the reaction mixture has been stirred atroom temperature for 2 hours, it is evaporated in vacuo. The residue ispartitioned between dichloromethane and saturated aqueous potassiumhydrogensulfate solution. The aqueous phase is separated off, adjustedto a pH of 12 using saturated aqueous sodium hydroxide solution andextracted twice with dichloromethane. The organic phase is dried oversodium sulfate and evaporated. The residue is chromatographed on asilica-gel column with dichloromethane/methanol as eluent: methyl3-[5-(3-dimethylaminopropoxy)pyrimidin-2-yl]benzoate as colourlesscrystals; ESI 316.

5.9 200 ml of a 1 M solution of diisobutylaluminium hydride in THF areadded dropwise with stirring to a solution, kept under nitrogen, of 12.6g (40.0 mmol) of methyl3-[5-(3-dimethylaminopropoxy)pyrimidin-2-yl]benzoate in 200 ml of THF.After the mixture has been stirred at room temperature for 1 hour, 10 mlof a saturated aqueous sodium sulfate solution are added dropwise. Theprecipitate formed is filtered off with suction and washed withdichloromethane. The filtrate is dried over sodium sulfate andevaporated. The residue is taken up in a mixture of diethyl ether andpetroleum ether. The precipitate formed is filtered off with suction,washed with petroleum ether and dried in vacuo:{3-[5-(3-dimethylaminopropoxy)pyrimidin-2-yl]-phenyl}methanol ascolourless crystals; m.p. 95-97° C.; ESI 288.

5.10 A suspension of 144 mg (0.50 mmol) of{3-[5-(3-dimethylamino-propoxy)pyrimidin-2-yl]phenyl}methanol, 88.5 mg(0.65 mmol) of 6-cyclopropyl-2H-pyridazin-3-one and 199 mg (0.75 mmol)of triphenylphosphine in 1 ml of THF is cooled in an ice bath, and 160mg (0.75 mmol) of diisopropyl azodicarboxylate are slowly addeddropwise. After the mixture has been stirred at room temperature for 1hour, ethyl acetate and 2 N aqueous hydrochloric acid are added. Theaqueous phase is separated off and washed three times with ethylacetate. The aqueous phase is adjusted to a pH of 14 using 2 N sodiumhydroxide solution and extracted twice with ethyl acetate. The organicphase is dried over sodium sulfate and evaporated. The residue ispurified by preparative HPLC. The product-containing fractions areevaporated, dissolved in 0.5 ml of 1 N aqueous hydrochloric acid and alittle water and lyophilised:6-cyclopropyl-2-{3-[5-(3-dimethylaminopropoxy)pyrimidin-2-yl]benzyl}-2H-pyridazin-3-one(“A8”) hydrochloride as colourless glass; ESI 406;

¹H-NMR (DMSO-d₆): δ [ppm] 0.80 (m, 2H), 0.93 (m, 2H), 1.96 (m, 1H), 2.21(m, 2H), 2.78 (d, J=5 Hz, 6H), 3.22 (m, 2H), 4.31 (t, J=6 Hz, 2H), 5.25(s, 2H), 6.91 (d, J=9.5 Hz, 1H), 7.29 (d, J=9.5 Hz, 1H), 7.37 (d, J=7.5Hz, 1H), 7.46 (t, J=7.5 Hz, 1H), 8.22 (d, J=7.5 Hz, 1H), 8.25 (bs, 1H),8.65 (s, 2H), 10.57 (bs, 1H).

The following compounds are obtained analogously:

6-cyclopropyl-2-{3-[5-(1-methylpiperidin-4-yloxy)pyrimidin-2-yl]benzyl}-2H-pyridazin-3-one

ESI 418;

2-{3-[5-(3-dimethylaminopropoxy)pyrimidin-2-yl]benzyl}-6-isopropyl-2H-pyridazin-3-oneformate

ESI 408;

6-cyclopropyl-2-{3-[5-(piperidin-4-yloxy)pyrimidin-2-yl]benzyl}-2H-pyridazin-3-one (preparation via the Boc-protected compound)

ESI 404;

6-cyclobutyl-2-{3-[5-(3-dimethylaminopropoxy)pyrimidin-2-yl]benzyl}-2H-pyridazin-3-one

6-cyclopropyl-2-{3-[5-(2-morpholin-4-ylethoxy)pyrimidin-2-yl]benzyl}-2H-pyridazin-3-one

EXAMPLE 6

The preparation of6-cyclopropyl-2-{3-[5-(4-methylpiperazin-1-yl)pyrimidin-2-yl]benzyl}-2H-pyridazin-3-one(“A12”) is carried out analogously to the following scheme:

6.1 A solution of 30 g (215 mmol) of potassium carbonate in 500 ml ofwater is added to a solution of 23.3 g (82.1 mmol) of methyl3-[5-(dimethyl-aminomethyleneamino)pyrimidin-2-yl]benzoate in 300 ml ofdioxane, and the mixture is stirred at 100° C. for 12 hours. Thereaction mixture is cooled to room temperature, and a pH of 6-7 is setusing 35 ml of 37% aqueous hydrochloric acid. The solution issubstantially evaporated in vacuo and lyophilised (crude3-(5-aminopyrimidin-2-yl)benzoic acid; ESI 216). 400 ml of methanol areadded to the residue, and 26 ml of concentrated sulfuric acid are addeddropwise to the resultant suspension with ice-cooling. The reactionmixture is stirred at room temperature for 6 hours, 500 ml of water arethen added, and 32% aqueous sodium hydroxide solution is added withice-cooling until a basic pH has been reached. The mixture is extractedwith ethyl acetate. The organic phase is dried over sodium sulfate andevaporated: methyl 3-(5-aminopyrimidin-2-yl)benzoate as brown solid;ES1230.

6.2 2.59 g (1.7 mmol) of potassium carbonate and 3.6 g (1.7 mmol) ofbis(2-chloroethyl)methylammonium chloride are added to a solution of2.50 g (10.9 mmol) of methyl 3-(5-aminopyrimidin-2-yl)benzoate in 10 mlof 1-methyl-2-pyrrolidone, and the suspension is stirred under argon at120° C. for 18 hours and at 140° C. for 6 hours. The reaction mixture iscooled to room temperature, 150 ml of water are added, and the mixtureis filtered through kieselguhr. The filtrate is adjusted to a pH of 14using 32% sodium hydroxide solution and extracted twice with ethylacetate. The combined organic phases are dried over sodium sulfate andevaporated: methyl 3-[5-(4-methyl-piperazin-1-yl)pyrimidin-2-yl]benzoateas brown oil; ESI 313.

6.3 13.8 ml of a 1 M solution of diisobutylaluminium hydride in THF areadded dropwise at room temperature to a solution, kept under argon, of860 mg (2.75 mmol) of methyl3-[5-(4-methylpiperazin-1-yl)pyrimidin-2-yl]-benzoate in 16 ml of THF. 3ml of saturated sodium sulfate solution and dichloromethane are added tothe reaction mixture. The precipitate formed is filtered off withsuction and washed with dichloromethane. The filtrate is dried oversodium sulfate and evaporated:{3-[5-(4-methylpiperazin-1-yl)pyrimidin-2-yl]phenyl}methanol as yellowsolid; ESI 285.

6.4 402 mg (corresponds to 1.2 mmol) of polymer-bound triphenylphosphineand 277 mg (1.20 mmol) of di-tert-butyl azodicarboxylate are added to asolution, kept under argon, of 54.7 mg (0.402 mmol) of6-cyclopropyl-2H-pyridazin-3-one and 114 mg (0.402 mmol) of{3-[5-(4-methylpiperazin-1-yl)-pyrimidin-2-yl]phenyl}methanol in 3 ml ofTHF and 1 ml of DMF, and the mixture is stirred at room temperature for3 hours. The reaction mixture is filtered through kieselguhr withsuction. The filtrate is evaporated and purified by preparative HPLC:6-cyclopropyl-2-{3-[5-(4-methylpiperazin-1-yl)pyrimidin-2-yl]benzyl}-2H-pyridazin-3-one(“A12”) bistrifluoroacetate as colourless oil; ESI 403.

EXAMPLE 7

The preparation of6-isopropyl-2-(3-{5-[1-(2-morpholin-4-ylethyl)-1H-pyrazol-4-yl]pyrimidin-2-yl}benzyl)-2H-pyridazin-3-one(“A13”) is carried out analogously to the following scheme:

7.1 A mixture of 14.4 g (157 mmol) of glyoxylic acid monohydrate and 50ml (464 mmol) of isopropyl methyl ketone is heated at 120° C. withstirring for two hours. The reaction mixture is cooled to 40° C., and 70ml of water and 12 ml of 32% aqueous ammonia solution are added. Thismixture is extracted three times with dichloromethane. 7.55 ml (155mmol) of hydrazinium hydroxide are added to the aqueous phase, and themixture is heated at reflux for 18 hours. The reaction mixture is cooledto room temperature and extracted with dichloromethane. The organicphase is dried over sodium sulfate and evaporated. The residue ischromatographed on a silica-gel column with petroleum ether/tert-butylmethyl ether as eluent, giving4-hydroxy-5,5,6-trimethyl-4,5-dihydro-2H-pyridazin-3-one as colourlesscrystals (ESI 157) and 6-isopropyl-2H-pyridazin-3-one as colourlesscrystals (ESI 139).

The following is likewise prepared by this method:6-cyclobutyl-2H-pyridazin-3-one.

7.2 425 g (20.0 mmol) of tripotassium phosphate trihydrate and 842 mg(1.2 mmol) of bis(triphenylphosphine)palladium chloride are added to asolution, kept under nitrogen, of 2.65 g (10.0 mol) of[3-(5-bromopyrimidin-2-yl)-phenyl]methanol and 3.38 g (11.0 mmol) of4-{2-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazol-1-yl]ethyl}morpholinein 50 ml of 1,2-dimethoxyethane, and the mixture is stirred at 80° C.for 18 hours. Dichloromethane and water are added to the reactionmixture, which is then filtered through kieselguhr, and the residue iswashed with dichloromethane. The organic phase is separated off, driedover sodium sulfate and evaporated. The residue is recrystallised from2-propanol, giving(3-{5-[1-(2-morpholin-4-ylethyl)-1H-pyrazol-4-yl]pyrimidin-2-yl}phenyl)methanolas yellowish crystals; ESI 366.

7.3 A solution, kept under nitrogen, of 324 mg (0.70 mmol) of(3-{5-[1-(2-morpholin-4-ylethyl)-1H-pyrazol-4-yl]pyrimidin-2-yl}phenyl)methanol,131 mg (0.91 mmol) of 6-isopropyl-2H-pyridazin-3-one and 278 mg (1.05mmol) of triphenylphosphine in 1.4 ml of THF is cooled in an ice bath,and 217 μl (1.056 mmol) of diisopropyl azodicarboxylate are addeddropwise. After the reaction mixture has been stirred at roomtemperature for 2 hours, it is evaporated. The residue ischromatographed on a silica-gel column with dichloromethane/methanol aseluent, giving6-isopropyl-2-(3-}5-[1-(2-morpholin-4-ylethyl)-1H-pyrazol-4-yl)pyrimidin-2-yl}benzyl)-2H-pyridazin-3-one(“A13”) as yellowish crystals; ESI 486;

¹H-NMR (DMSO-d₆): δ [ppm] 1.20 (d, J=7 Hz, 6H), 2.44 (m, 4H), 2.77 (t,J=6.5 Hz, 2H), 2.90 (septet, J=7 Hz, 1H), 3.57 (m, 4H), 4.30 (t, J=6.5Hz, 2H), 5.31 (s, 2H), 6.97 (d, J=9.3 Hz, 1H), 7.44 (d, J=7.5 Hz, 1H),7.50 (t, J=7.5 Hz, 1H), 7.51 (d, J=9.3 Hz, 1H), 8.11 (s, 1H), 8.31 (d,J=7.5 Hz, 1H), 8.36 (bs, 1H), 8.44 (s, 1H), 9.13 (s, 2H).

The following compound is obtained analogously:

2-(3-{5-[1-(2-morpholin-4-ylethyl)-1H-pyrazol-4-yl]pyrimidin-2-yl}benzyl)-2H-pyridazin-3-one (“A14”) trifluoroacetate

ESI 444. EXAMPLE 8

The preparation of2-[3-(5-aminopyrimidin-2-yl)benzyl]-6-cyclopropyl-2H-pyridazin-3-one(“A18”) is carried out analogously to the following scheme. Theindividual reaction steps are carried out analogously to correspondingreactions in Examples 5 and 6:

Pharmacological Data

TABLE 1 Met kinase inhibition (enzyme assay and/or cell assay) IC₅₀ IC₅₀Compound No. (enzyme) (cell) “A1” A B “A2” A A “A3” A A “A4” A B “A5” AA “A6” A B “A7” B C “A8” A A “A9” A A “A10” A B “A11” A B “A12” A A“A13” A B “A14” A B “A15” A A “A18” B B IC₅₀: 1 nM-0.1 μM = A 0.1 μM-10μM = B > 10 μM = C

The following examples relate to medicaments:

EXAMPLE A Injection Vials

A solution of 100 g of an active ingredient of the formula I and 5 g ofdisodium hydrogenphosphate in 3 l of bidistilled water is adjusted to pH6.5 using 2 N hydrochloric acid, sterile filtered, transferred intoinjection vials, lyophilised under sterile conditions and sealed understerile conditions. Each injection vial contains 5 mg of activeingredient.

EXAMPLE B Suppositories

A mixture of 20 g of an active ingredient of the formula I with 100 g ofsoya lecithin and 1400 g of cocoa butter is melted, poured into mouldsand allowed to cool. Each suppository contains 20 mg of activeingredient.

EXAMPLE C Solution

A solution is prepared from 1 g of an active ingredient of the formulaI, 9.38 g of NaH₂PO₄.2H₂O, 28.48 g of Na₂HPO₄.12H₂O and 0.1 g ofbenzalkonium chloride in 940 ml of bidistilled water. The pH is adjustedto 6.8, and the solution is made up to 1 l and sterilised byirradiation. This solution can be used in the form of eye drops.

EXAMPLE D Ointment

500 mg of an active ingredient of the formula I are mixed with 99.5 g ofVaseline under aseptic conditions.

EXAMPLE E Tablets

A mixture of 1 kg of active ingredient of the formula I, 4 kg oflactose, 1.2 kg of potato starch, 0.2 kg of talc and 0.1 kg of magnesiumstearate is pressed in a conventional manner to give tablets in such away that each tablet contains 10 mg of active ingredient.

EXAMPLE F Dragees

Tablets are pressed analogously to Example E and subsequently coated ina conventional manner with a coating of sucrose, potato starch, talc,tragacanth and dye.

EXAMPLE G Capsules

2 kg of active ingredient of the formula I are introduced into hardgelatine capsules in a conventional manner in such a way that eachcapsule contains 20 mg of the active ingredient.

EXAMPLE H Ampoules

A solution of 1 kg of active ingredient of the formula I in 60 l ofbidistilled water is sterile filtered, transferred into ampoules,lyophilised under sterile conditions and sealed under sterileconditions. Each ampoule contains 10 mg of active ingredient.

1. Compounds of the formula I

in which R¹ denotes H or A, R² denotes an unsaturated, saturated oraromatic 5- or 6-membered heterocycle having 1 to 4 N, O and/or S atoms,which may be unsubstituted or mono-, di- or trisubstituted by Hal, A,[C(R³)₂]_(n)OR³, N═CR³N(R³)₂, SR³, NO₂, CN, COOR³, CON(R³)₂, NR³COA,NR³SO₂A, SO₂N(R³)₂, S(O)_(m),A, [C(R³)₂]_(n)N(R³)₂, [C(R³)₂]_(n)Het,O[C(R³)₂]_(n)N(R³)₂, O[C(R³)₂]_(n)Het, S[C(R³)₂]_(n)N(R³)₂,S[C(R³)₂]_(n)Het, NR³[C(R³)₂]_(n)N(R³)₂, NR³[C(R³)₂]_(n)Het, NHCON(R³)₂,NHCONH[C(R³)₂]_(n)N(R³)₂, NHCONH[C(R³)₂]_(n)Het,[C(R³)₂]_(n)NHCO[C(R³)₂]_(n)N(R³)₂, [C(R³)₂]_(n)NHCO[C(R³)₂]_(n)Het,CON(R³)₂, CONR³[C(R³)₂]_(n)N(R³)₂, CONR³[C(R³)₂]_(n)NR³COOA,CONR³[C(R³)₂]_(n)OR³, CONR³[C(R³)₂]_(n)Het, COHet, COA and/or ═O(carbonyl oxygen), R³ denotes H or A, R⁴, R^(4′) each, independently ofone another, denote H, Hal, A, OR³, CN, COOR³, CON(R³)₂, NR³COA,NR³SO₂A, SO₂N(R³)₂ or S(O)_(m)A, Ar denotes phenyl, naphthyl orbiphenyl, each of which is unsubstituted or mono-, di- or trisubstitutedby Hal, A, [C(R³)₂]_(n)OR³, [C(R³)₂]_(n)N(R³)₂, SR³, NO₂, CN, COOR³,CON(R³)₂, NR³COA, NR³SO₂A, SO₂N(R³)₂, S(O)_(m)A, CO-Het, Het,O[C(R³)₂]_(n)N(R³)₂, O[C(R³)₂]_(n)Het, NHCOOA, NHCON(R³)₂,NHCOO[C(R³)₂]_(n)N(R³)₂, NHCOO[C(R³)₂]_(n)Het, NHCONH[C(R³)₂]_(n)N(R³)₂,NHCONH[C(R³)₂]_(n)Het, OCONH[C(R³)₂]_(n)N(R³)₂, OCONH[C(R³)₂]_(n)Het,CONR³[C(R³)₂]_(n)N(R³)₂, CONR³[C(R³)₂]_(n)Het and/or COA, Het denotes amono-, bi- or tricyclic saturated, unsaturated or aromatic heterocyclehaving 1 to 4 N, O and/or S atoms, which may be unsubstituted or mono-,di- or trisubstituted by Hal, A, [C(R³)₂]_(n)OR³, [C(R³)₂]_(n)N(R³)₂,SR³, NO₂, CN, COOR³, CON(R³)₂, NR³COA, NR³SO₂A, SO₂N(R³)₂, S(O)_(m)A,CO-Het¹, [C(R³)₂]_(n)Het¹, O[C(R³)₂]_(n)N(R³)₂, O[C(R³)₂]_(n)Het¹,NHCOOA, NHCON(R³)₂, NHCOO[C(R³)₂]_(n)N(R³)₂, NHCOO[C(R³)₂]_(n)Het¹,NHCONH[C(R³)₂]_(n)N(R³)₂, NHCONH[C(R³)₂]_(n)Het¹,OCONH[C(R³)₂]_(n)N(R³)₂, OCONH[C(R³)₂]_(n)Het¹, CO-Het¹, CHO, COA, ═S,═NH, ═NA and/or ═O (carbonyl oxygen), Het¹ denotes a monocyclicsaturated heterocycle having 1 to 2 N and/or O atoms, which may be mono-or disubstituted by A, OA, OH, Hal and/or ═O (carbonyl oxygen), Adenotes unbranched or branched alkyl having 1-10 C atoms, in which 1-7 Hatoms may be replaced by F and/or in which one or two non-adjacent CH₂groups may be replaced by O, NH, S, SO, SO₂ and/or by CH═CH groups, orcyclic alkyl having 3-7 C atoms, Hal denotes F, Cl, Br or I, m denotes0, 1 or 2, n denotes 0, 1, 2, 3 or 4, and pharmaceutically usable salts,tautomers and stereoisomers thereof, including mixtures thereof in allratios.
 2. Compounds according to claim 1 in which R² denotes anunsaturated or aromatic 5- or 6-membered heterocycle having 1 to 4 Nand/or O atoms, which may be unsubstituted or mono-, di- ortrisubstituted by Hal, A, [C(R³)₂]_(n)N(R³)₂, [C(R³)₂]_(n)Het,O[C(R³)₂]_(n)N(R³)₂ and/or O[C(R³)₂]_(n)Het, and pharmaceutically usablesalts, tautomers and stereoisomers thereof, including mixtures thereofin all ratios.
 3. Compounds according to claim 1 in which R⁴, R^(4′)denote H, and pharmaceutically usable salts, tautomers and stereoisomersthereof, including mixtures thereof in all ratios.
 4. Compoundsaccording to claim 1 in which Het denotes a monocyclic saturated,unsaturated or aromatic heterocycle having 1 to 4 N, O and/or S atoms,which may be unsubstituted or mono-, di- or trisubstituted by A and/or[C(R³)₂]_(n)Het¹, and pharmaceutically usable salts, tautomers andstereoisomers thereof, including mixtures thereof in all ratios. 5.Compounds according to claim 1 in which A denotes unbranched or branchedalkyl having 1-8 C atoms, in which 1-7 H atoms may be replaced by Fand/or Cl, or cyclic alkyl having 3-7 C atoms, and pharmaceuticallyusable salts, tautomers and stereoisomers thereof, including mixturesthereof in all ratios.
 6. Compounds according to claim 1 in which R³denotes H, methyl, ethyl or propyl, and pharmaceutically usable salts,tautomers and stereoisomers thereof, including mixtures thereof in allratios.
 7. Compounds according to claim 1 in which Het¹ denotes amonocyclic saturated heterocycle having 1 to 2 N and/or O atoms, whichmay be mono- or disubstituted by A and/or ═O (carbonyl oxygen), andpharmaceutically usable salts, tautomers and stereoisomers thereof,including mixtures thereof in all ratios.
 8. Compounds according toclaim 1 in which R² denotes furyl, thienyl, pyrrolyl, imidazolyl,pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyridyl,pyrimidinyl, triazolyl, tetrazolyl, oxadiazolyl or thiadiazolyl, each ofwhich is monosubstituted by Hal, A, [C(R³)₂]_(n)N(R³)₂, [C(R³)₂]_(n)Het,O[C(R³)₂]_(n)N(R³)₂ or O[C(R³)₂]_(n)Het, and pharmaceutically usablesalts, tautomers and stereoisomers thereof, including mixtures thereofin all ratios.
 9. Compounds according to claim 1 in which Het denotespiperidinyl, piperazinyl, pyrrolidinyl, morpholinyl, furyl, thienyl,pyrrolyl, imidazolyl, pyrazolyl, oxazolyl, isoxazolyl, thiazolyl,isothiazolyl, pyridyl, pyrimidinyl, triazolyl, tetrazolyl, oxadiazolyl,thiadiazolyl, pyridazinyl or pyrazinyl, each of which is monosubstitutedby A or [C(R³)₂]_(n)Het¹, and pharmaceutically usable salts, tautomersand stereoisomers thereof, including mixtures thereof in all ratios. 10.Compounds according to claim 1 in which Het¹ denotes pyrrolidine,piperidine, piperazine or morpholine, each of which is unsubstituted ormono- or disubstituted by A and/or ═O (carbonyl oxygen), andpharmaceutically usable salts, tautomers and stereoisomers thereof,including mixtures thereof in all ratios.
 11. Compounds according toclaim 1 in which R¹ denotes H or A, R² denotes an unsaturated oraromatic 5- or 6-membered heterocycle having 1 to 4 N and/or O atoms,which may be unsubstituted or mono-, di- or trisubstituted by Hal, A,[C(R³)₂]_(n)N(R³)₂, [C(R³)₂]_(n)Het, O[C(R³)₂]_(n)N(R³)₂ and/orO[C(R³)₂]_(n)Het, R³ denotes H, methyl, ethyl or propyl, R⁴, R^(4′)denote H, Het denotes a monocyclic saturated, unsaturated or aromaticheterocycle having 1 to 4 N, O and/or S atoms, which may beunsubstituted or mono-, di- or trisubstituted by A and/or[C(R³)₂]_(n)Het¹, Het¹ denotes a monocyclic saturated heterocycle having1 to 2 N and/or O atoms, which may be mono- or disubstituted by A and/or═O (carbonyl oxygen), A denotes unbranched or branched alkyl having 1-8C atoms, in which 1-7 H atoms may be replaced by F and/or Cl, or cyclicalkyl having 3-7 C atoms, Hal denotes F, Cl, Br or I, n denotes 0, 1, 2,3 or 4, and pharmaceutically usable salts, tautomers and stereoisomersthereof, including mixtures thereof in all ratios.
 12. Compoundsaccording to claim 1 in which R¹ denotes H or A, R² denotes furyl,thienyl, pyrrolyl, imidazolyl, pyrazolyl, oxazolyl, isoxazolyl,thiazolyl, isothiazolyl, pyridyl, pyrimidinyl, triazolyl, tetrazolyl,oxadiazolyl or thiadiazolyl, each of which is monosubstituted by Hal, A,[C(R³)₂]_(n)N(R³)₂, [C(R³)₂]_(n)Het, O[C(R³)₂]_(n)N(R³)₂ orO[C(R³)₂]_(n)Het, R³ denotes H, methyl, ethyl or propyl, R⁴, R^(4′)denote H, Het denotes piperidinyl, piperazinyl, pyrrolidinyl,morpholinyl, furyl, thienyl, pyrrolyl, imidazolyl, pyrazolyl, oxazolyl,isoxazolyl, thiazolyl, isothiazolyl, pyridyl, pyrimidinyl, triazolyl,tetrazolyl, oxadiazolyl, thiadiazolyl, pyridazinyl or pyrazinyl, each ofwhich is monosubstituted by A or [C(R³)₂]_(n)Het¹, Het¹ denotespyrrolidine, piperidine, piperazine or morpholine, each of which isunsubstituted or mono- or disubstituted by A and/or ═O (carbonyloxygen), A denotes unbranched or branched alkyl having 1-8 C atoms, inwhich 1-7 H atoms may be replaced by F and/or Cl, or cyclic alkyl having3-7 C atoms, Hal denotes F, Cl, Br or I, n denotes 0, 1, 2, 3 or 4, andpharmaceutically usable salts, tautomers and stereoisomers thereof,including mixtures thereof in all ratios.
 13. Compounds according toclaim 1, selected from the group No. Name and/or structure “A1”2-[3-(5-Bromopyrimidin-2-yl)benzyl]-6-cyclopropyl-2H- pyridazin-3-one“A2” 6-Cyclopropyl-2-(3-{5-[1-(2-pyrrolidin-1-ylethyl)-1H-pyrazol-4-yl]pyrimidin-2-yl}benzyl)-2H-pyridazin-3-one “A3”6-Cyclopropyl-2-(3-{5-[1-(2-morpholin-4-ylethyl)-1H-pyrazol-4-yl]pyrimidin-2-yl}benzyl)-2H-pyridazin-3-one “A4”6-Cyclopropyl-2-[3-(5-methylpyrimidin-2-yl)benzyl]-2H- pyridazin-3-one“A5” 6-Cyclopropyl-2-{3-[5-(1-piperidin-4-yl-1H-pyrazol-4-yl)-pyrimidin-2-yl]benzyl}-2H-pyridazin-3-one “A6”6-Methyl-2-{3-[5-(1-piperidin-4-yl-1H-pyrazol-4-yl)pyrimidin-2-yl]benzyl}-2H-pyridazin-3-one “A7”6-Cyclopropyl-2-[3-(5-methyl-1,2,4-oxadiazol-3-yl)benzyl]-2H-pyridazin-3-one “A8”6-Cyclopropyl-2-{3-[5-(3-dimethylaminopropoxy)pyrimidin-2-yl]-benzyl}-2H-pyridazin-3-one “A9”6-Cyclopropyl-2-{3-[5-(1-methylpiperidin-4-yloxy)pyrimidin-2-yl]benzyl}-2H-pyridazin-3-one “A10”2-{3-[5-(3-Dimethylaminopropoxy)pyrimidin-2-yl]benzyl}-6-isopropyl-2H-pyridazin-3-one “A11”6-Cyclopropyl-2-{3-[5-(piperidin-4-yloxy)pyrimidin-2-yl]benzyl}-2H-pyridazin-3-one “A12”6-Cyclopropyl-2-{3-[5-(4-methylpiperazin-1-yl)pyrimidin-2-yl]-benzyl}-2H-pyridazin-3-one “A13”6-Isopropyl-2-(3-{5-[1-(2-morpholin-4-ylethyl)-1H-pyrazol-4-yl]-pyrimidin-2-yl}benzyl)-2H-pyridazin-3-one “A14”2-(3-{5-[1-(2-Morpholin-4-ylethyl)-1H-pyrazol-4-yl]pyrimidin-2-yl}benzyl)-2H-pyridazin-3-one “A15”6-Cyclobutyl-2-(3-{5-[1-(2-pyrrolidin-1-ylethyl)-1H-pyrazol-4-yl]-pyrimidin-2-yl}benzyl)-2H-pyridazin-3-one “A16”6-Cyclobutyl-2-{3-[5-(3-dimethylaminopropoxy)pyrimidin-2-yl]-benzyl}-2H-pyridazin-3-one “A17”6-Cyclopropyl-2-{3-[5-(2-morpholin-4-ylethoxy)pyrimidin-2-yl]-benzyl}-2H-pyridazin-3-one “A18”2-[3-(5-Aminopyrimidin-2-yl)benzyl]-6-cyclopropyl-2H- pyridazin-3-one

and pharmaceutically usable salts, tautomers and stereoisomers thereof,including mixtures thereof in all ratios.
 14. Process for thepreparation of compounds of the formula I according to claim 1 andpharmaceutically usable salts, tautomers and stereoisomers thereof,characterised in that a) a compound of the formula II

in which R¹ has the meaning indicated in claim 1, is reacted with acompound of the formula III

in which R², R³, R⁴ and R^(4′) have the meanings indicated in claim 1and L denotes Cl, Br, I or a free or reactively functionally modified OHgroup, or b) a radical R² is converted into another radical R² by i)arylating a heterocycle, ii) acylating or alkylating an amino group,iii) etherifying a hydroxyl group, or c) it is liberated from one of itsfunctional derivatives by treatment with a solvolysing orhydrogenolysing agent, and/or a base or acid of the formula I isconverted into one of its salts.
 15. Medicaments comprising at least onecompound of the formula I according to claim 1 and/or pharmaceuticallyusable salts, tautomers and stereoisomers thereof, including mixturesthereof in all ratios, and optionally excipients and/or adjuvants.
 16. Amethod for the treatment of diseases in which the inhibition, regulationand/or modulation of kinases signal transduction plays a role, saidmethod comprising administering to a patient an effective amount of acompound according to claim
 1. 17. The method according to claim 16,wherein said method is for the treatment of diseases which areinfluenced by inhibition of tyrosine kinases.
 18. The method accordingto claim 16, wherein said method is for the treatment of diseases whichare influenced by inhibition of Met kinase.
 19. The method according toclaim 17, where the disease to be treated is a solid tumour.
 20. Themethod according to claim 19, where the solid tumour originates from thegroup of tumours of the squamous epithelium, the bladder, the stomach,the kidneys, of head and neck, the oesophagus, the cervix, the thyroid,the intestine, the liver, the brain, the prostate, the urogenital tract,the lymphatic system, the stomach, the larynx and/or the lung.
 21. Themethod according to claim 19, where the solid tumour originates from thegroup monocytic leukaemia, lung adenocarcinoma, small-cell lungcarcinomas, pancreatic cancer, glioblastomas and breast carcinoma. 22.The method according to claim 20, where the solid tumour originates fromthe group of lung adenocarcinoma, small-cell lung carcinomas, pancreaticcancer, glioblastomas, colon carcinoma and breast carcinoma.
 23. Themethod according to claim 17, where the disease to be treated is atumour of the blood and immune system.
 24. The method according to claim23, where the tumour originates from the group of acute myeloidleukaemia, chronic myeloid leukaemia, acute lymphatic leukaemia and/orchronic lymphatic leukaemia.
 25. Medicaments comprising at least onecompound of the formula I according to claim 1 and/or pharmaceuticallyusable salts and stereoisomers thereof, including mixtures thereof inall ratios, and at least one further medicament active ingredient. 26.Set (kit) consisting of separate packs of (a) an effective amount of acompound of the formula I according to claim 1 and/or pharmaceuticallyusable salts and stereoisomers thereof, including mixtures thereof inall ratios, and (b) an effective amount of a further medicament activeingredient.